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mathematics
calculus with applications

Questions and Answers of Calculus With Applications

The following table gives the life expectancy at birth of females born in the United States in various years from 1970 to 2005.1. Find an equation for the least squares line for these data, using
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (1, 3), m = –2
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (2, 4), m = –1
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (–5, –7), m = 0
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (4, 2) and (1, 3)
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (8, –1) and (4, 3)
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (2/3, 1/2) and (1/4, –2)
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (–2, 3/4) and (2/3, 5/2)
The table shows the men’s and women’s outdoor world records (in seconds) in the 800-m run.Let x be the year, with x = 0 corresponding to 1900.a. Find the equation for the least squares line for
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (–8, 4) and (–8, 6)
In Exercises 15–24, find an equation in slope-intercept form for each line.Through (–1, 3) and (0, 3)
If you think a marathon is a long race, consider the Hardrock 100, a 100.5 mile running race held in southwestern Colorado. The chart at right lists the times that the 2008 winner, Kyle Skaggs,
The supply and demand for crabmeat in a local fish store are related by the equationsandwhere p represents the price in dollars per pound and q represents the quantity of crabmeat in pounds per day.
Graph each equation.y = x – 1
Graph each equation.y = 4x + 5
Graph each equation.y = –4x + 9
For a new diet pill, 60 pills will be supplied at a price of $40, while 100 pills will be supplied at a price of $60. Write linear supply function for this product.
Find the equilibrium price and quantity for the diet pills in Exercises 47 and 48.Data from Exercise 48.The demand for the diet pills in Exercise 47 is 50 pills at a price of $47.50 and 80 pills at a
The demand for the diet pills in Exercise 47 is 50 pills at a price of $47.50 and 80 pills at a price of $32.50. Determine a linear demand function for these pills.Data from Exercises 47.For a new
Graph each equation.3x – y = –9
Graph each equation.y = –2
Graph each equation.x = 4
Graph each equation.x + 5 = 0
Graph each equation.y + 8 = 0
The United States is China’s largest export market. Imports from China have grown from about 102 billion dollars in 2001 to 338 billion dollars in 2008. This growth has been approximately linear.
U.S. exports to China have grown (although at a slower rate than imports) since 2001. In 2001, about 19.1 billion dollars of goods were exported to China. By 2008, this amount had grown to 69.7
The U.S. Census Bureau reported that the median income for all U.S. households in 2008 was $50,303. In 1988, the median income (in 2008 dollars) was $47,614. The median income is approximately linear
The average new car cost (in dollars) for selected years from 1980 to 2005 is given in the table.a. Find a linear equation for the average new car cost in terms of , the number of years since 1980,
Graph each equation.x + 4y = 0
In general, people tend to live longer in countries that have a greater supply of food. Listed below is the 2003–2005 daily calorie supply and 2005 life expectancy at birth for 10 randomly selected
The following table shows the subscribership of cellular telephones in the United States (in millions) for even-numbered years between 2000 and 2008. a. Plot the data by letting t = 0 correspond
The per capita consumption of beef in the United States decreased from 115.7 lb in 1974 to 92.9 lb in 2007. Assume a linear function describes the decrease. Write a linear equation defining the
The Consumer Price Index (CPI) is a measure of the change in the cost of goods over time. The index was 100 for the three-year period centered on 1983. For simplicity, we will assume that the CPI was
The following table gives the number of families under the poverty level in the U.S. in recent years.a. Find a linear equation for the number of families below poverty level (in thousands) in terms
More people are staying single longer in the United States. In 1995, the number of never-married adults, age 15 and over, was 55.0 million. By 2009, it was 72.1 million. Assume the data increase
In general, the larger a state’s population, the more the governor earns. Listed in the table below are the estimated 2008 populations (in millions) and the salary of the governor (in thousands of
Some scientists believe there is a limit to how long humans can live. One supporting argument is that during the last century, life expectancy from age 65 has increased more slowly than life
The mortality rate for children under 5 years of age around the world has been declining in a roughly linear fashion in recent years. The rate per 1000 live births was 90 in 1990 and 65 in 2008.a.
The percentage of adults in the United States without health insurance increased at a roughly linear rate from 1999, when it was 17.2%, to 2008, when it was 20.3%.a. Determine a linear equation that
The following table lists the U.S. median age at first marriage for men and women. The age at which both groups marry for the first time seems to be increasing at a roughly linear rate in recent
In 1950, there were 249,187 immigrants admitted to the United States. In 2008, the number was 1,107,126.a. Assuming that the change in immigration is linear, write an equation expressing the number
From 2001 to 2007, the number of stations carrying news/talk radio increased at a roughly linear rate, from 1139 in 2001 to 1370 in 2007.a. Find a linear equation expressing the number of stations
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.3√125
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.4√1296
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.5√–3125
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√50
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√2000
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√32y5
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√27 · √3
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√2 · √35
The total value of consumer durable goods has grown at an approximately linear rate in recent years. The annual data for the years 2002 through 2008 can be summarized as follows, where x represents
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.7√2 – 8√18 + 4√72
The number of banks in the United States has been dropping steadily since 1984, and the trend in recent years has been roughly linear. The annual data for the years 1999 through 2008 can be
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.4√3 – 5√12 + 3√75
The number of subscribers to digital cable television has been growing steadily, as shown by the following table.a. Find an equation for the least squares line, letting x equal the number of years
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.4√7 – √28 + √343
The total amount of consumer credit has been increasing steadily in recent years. The following table gives the total U.S. outstanding consumer credit.a. Find an equation for the least squares line,
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.3√28 – 4√63 + √112
In Exercises 11–14, decide whether the statement is true or false.The graph of f(x) = –5 is a vertical line.
New car sales have increased at a roughly linear rate. Sales, in millions of vehicles, from 2000 to 2007, are given in the table below. Source: National Automobile Dealers Association. Let x
In 2006, for passengers who made early reservations, American Airlines offered lower prices on one-way fares from New York to various cities. Fourteen of the cities are listed in the following table,
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.3√2 – 3√16 + 23√54
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.23√5 – 43√40 + 33√135
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. √2x³y²z²
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. V160r¹st¹2
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. 128x³y³z⁹
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. 8,7 11 X
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. Vab - 2Vab + Vab
The following table lists how poverty level income cutoffs (in dollars) for a family of four have changed over time. Let x represent the year, with x = 0 corresponding to 1980 and y represent
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers. Vp¹q³ Vpa - Vpa +Vpa 5,9 9
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√a · 3√a
Simplify each root, if possible. V16 - 8x + x²
Simplify each expression by removing as many factors as possible from under the radical. Assume that all variables represent positive real numbers.√b3 · 4√b3
While shopping for an air conditioner, Adam Bryer consulted the following table, which gives a machine’s BTUs and the square footage (ft2) that it would cool.a. Find the equation for the least
Simplify each root, if possible. V9y2 + 30y + 25
Simplify each root, if possible. V4 - 25z²
Simplify each root, if possible. 9k² + h²
Rationalize each denominator. Assume that all radicands represent positive real numbers.5/√7
Rationalize each denominator. Assume that all radicands represent positive real numbers.5/√10
Rationalize each denominator. Assume that all radicands represent positive real numbers. –3/√12
Rationalize each denominator. Assume that all radicands represent positive real numbers. 4/√8
Rationalize each denominator. Assume that all radicands represent positive real numbers. 3 1-√2 نیا
Rationalize each denominator. Assume that all radicands represent positive real numbers. 5 2-V6
Rationalize each denominator. Assume that all radicands represent positive real numbers. 6 2 + √2
Rationalize each denominator. Assume that all radicands represent positive real numbers. V5 √5 + √2
Rationalize each denominator. Assume that all radicands represent positive real numbers. 1 √r-√3
Joanne Wendelken sells silk-screened T-shirts at community festivals and crafts fairs. Her marginal cost to produce one T-shirt is $3.50. Her total cost to produce 60 T-shirts is $300, and she sells
Rationalize each denominator. Assume that all radicands represent positive real numbers. 5 Vm - √5
Rationalize each denominator. Assume that all radicands represent positive real numbers. y-5 Vy-√5
Alfred Juarez owns a small publishing house specializing in Latin American poetry. His fixed cost to produce a typical poetry volume is $525, and his total cost to produce 1000 copies of the book is
Rationalize each denominator. Assume that all radicands represent positive real numbers. √z-1 √z - √5
Rationalize each denominator. Assume that all radicands represent positive real numbers. √x + √x+1 √x - √x+1
Rationalize each denominator. Assume that all radicands represent positive real numbers. Vp + Vp² - 1 Vp-Vp² - 1
Rationalize each numerator. Assume that all radicands represent positive real numbers. 1+ √₂ 2 2
Rationalize each numerator. Assume that all radicands represent positive real numbers. 3-√3 6
Rationalize each numerator. Assume that all radicands represent positive real numbers. √x + √x+1 √x - √x+1
Rationalize each numerator. Assume that all radicands represent positive real numbers. Vp-Vp-2 Vp
The 2009–2010 budget for the California State University system projected a fixed cost of $486,000 at each of five off-campus centers, plus a marginal cost of $1140 per student.a. Find a formula
Evaluate each expression. Write all answers without exponents.8–2
Evaluate each expression. Write all answers without exponents.3–4

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