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college algebra

Questions and Answers of College Algebra

Calculators can express numbers in scientific notation. The displays often use notation such asSimilarly, 2.5e-3 represents 2.5 × 10-3. They can also perform operations with numbers entered in
A student subtracted (15x2 + 12) - (7x2 - 3) vertically as follows.Give the correct difference. 15x² + 12 7x² 3 8x² + 9
Combine like terms. 6m2n - 8mn2 + 3mn2 - 7m2n
Graph each polynomial function. Give the domain and range. fx) ܨ = 1 2
Find each product. (5m - 1)(5m + 1)
Graph each polynomial function. Give the domain and range. I + εx= = (x) f
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.5t-3
Find each product. (бу - 3)(бу + 3)
Let ƒ(x) = 3x2 + 2x - 1 and g(x) = 5x + 7. Find each of the following. (a) (gof)(3) (d) (gof)(-2) (b) (fog)(3) (e) (fog)(x) (c) (fog)(-2) (f) (gof)(x)
Calculators can express numbers in scientific notation. The displays often use notation such asSimilarly, 2.5E-3 represents 2.5 × 10-3. They can also perform operations with numbers entered in
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.-a-3
Add or subtract as indicated. (5x² + 7x-4) + (3x² - 6x + 2)
Graph each polynomial function. Give the domain and range. 7 – zx = (x)f
Find each product. (3а + 2с)(3а - 2с)
Find each product. -6k(2k² + 7)
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.-b-4
Add or subtract as indicated. (4k³ + k² + k) + (2k³ - 4k² − 3k) -
Graph each polynomial function. Give the domain and range. f(x) = x² + 2
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.(-a)-4
Calculators can express numbers in scientific notation. The displays often use notation such asSimilarly, 2.5E-3 represents 2.5 × 10-3. They can also perform operations with numbers entered in
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.(-b)-6
The intensity of an earthquake is measured relative to the intensity of a standard zero-level earthquake of intensity I0. The relationship is equivalent to I = I0 × 10R, where R is the Richter scale
Find each product. (5r + 4s) (5r - 4s)
Find each product. 2x(x + 4)(x + 7)
The intensity of an earthquake is measured relative to the intensity of a standard zero-level earthquake of intensity I0. The relationship is equivalent to I = I0 × 10R, where R is the Richter scale
Add or subtract as indicated. (6t² − 4t4 – t) + (3t4 − 4t² + 5) - -
Graph each polynomial function. Give the domain and range. I + εx = (x) f EX
Find each product. (4m + 7n²) (4m7n²)
Find each product. (3m - 2)(5m + 1)
Add or subtract as indicated. (3p² + 2p - 5) + (7p² - 4p³ + 3p)
Graph each polynomial function. Give the domain and range. f(x) = -x³ + 2
Find each product. (2k² + 6h)(2k²-6h)
Let ƒ(x) = 12x2 - 3x and g(x) = 3x. Find each of the following. (a) (fg)(x) (b) (fg)(-1)
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.(-3x)-3
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (gºf)(6)
Add or subtract as indicated. Add. -12p² + 4p - 1 3p²+7p-8
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. 오 3 2 -)² 4
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (hof) (6)
Write each expression using only positive exponents. Assume that all variables represent nonzero real numbers.(-2x)-5
Evaluate each expression. 3-3 7-2
Add or subtract as indicated. Add. -6y³ + 8y + 5 9y³ + 4y - 6
Let ƒ(x) = 12x2 - 3x and g(x) = 3x. Find each of the following. (a) (1) (1) (b) (-) (2)
Add or subtract as indicated. Subtract. 12a + 15 7a 3
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. (0.2x - 1.4y)²
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. 48 46
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. (0.3x - 1.6y)²
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (foh) (-2)
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. 59 57
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (hog) (-2)
Add or subtract as indicated. Subtract. -3b + 6 2b8
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. 4x 2 3) (4 3 4x + 2 3
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. x12 x8
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (fog)(0)
Add or subtract as indicated. Subtract. 6m² 11m +5 -8m² + 2m - 1
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (0) (y f)
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. y14 ,10
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. 31- 5 4 3t+ 5 4,
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. (0.2x + 1.3) (0.5x – 0.1) -
Add or subtract as indicated. Subtract. -42² + 2z - 1 32² - 5z + 2
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. r7 r10
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (gof)(x)
Add or subtract as indicated. Add. 12z² 112 + 8 52² + 162 - 2 52-9 -42²
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. V8 ,12
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. (0.1y+ 2.1) (0.5y - 0.4)
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. 64 6-2
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (gᵒh)(x)
Add or subtract as indicated. Add. -6m3 + 2m² + 5m + 8m3 + 4m² - 6m -3m3 + 2m² - 7m +
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (hog)(x)
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. :z) (w. 1 3w+ 4 W -22)
The factors in the following exercises involve fractions or decimals. Apply the methods of this section, and find each product. 2 (5r+ ²y) (r = - - 5y)
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (hof)(x)
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (foh) (1) 2
Add or subtract as indicated. Add. -7r8 + 2r6 3рб r5 +5
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. 6-3 67
Find each product. [(5x + 1) + 6y]²
Add or subtract as indicated. Subtract. -5a4 +8a²-9 6a³- a² + 2
Let ƒ(x) = x2 + 4, g(x) = 2x + 3, and h(x) = x - 5. Find each of the following. (nos) (+/-)
Apply the quotient rule for exponents, if possible, and write each result using only positive exponents. Assume that all variables represent nonzero real numbers. 5-4 52
Add or subtract as indicated. Subtract. m4 2m³ + 8m² m³ + 2m
Find each product. [(3m - 2) + p]2
The tables give some selected ordered pairs for functions ƒ and g.Tables like these can be used to evaluate composite functions. For example, to evaluate (g ° ƒ) (6), use the first table to find
Perform the indicated operations.Subtract 4y2 - 2y + 3 from 7y2 - 6y + 5.
Simplify each expression. Assume that all variables represent nonzero real numbers. (3r²)²r-5 r-2p3 (2r-6)²
The intensity of an earthquake is measured relative to the intensity of a standard zero-level earthquake of intensity I0. The relationship is equivalent to I = I0 × 10R, where R is the Richter scale
Find each product. (3w - 2t) (2w - 3t)
Add or subtract as indicated. (y + 3y + 2) + (4y 3y + 2y 1)
Graph each polynomial function. Give the domain and range. f(x) = 2x³ - 1
The intensity of an earthquake is measured relative to the intensity of a standard zero-level earthquake of intensity I0. The relationship is equivalent to I = I0 × 10R, where R is the Richter scale
Find each product. (2p² + 6p) (5p² - 4)
Find each product. 3y(5y³ + 2) (5y³ − 2)
Add or subtract as indicated. (2x52x4+x³-1) + (x4 - 3x³ + 2)
Let ƒ(x) = x2 and g(x) = 2x - 1. Match each expression in Column I with the description of how to evaluate it in Column II. I (fᵒg)(5) II A. Square 5. Take the result and square it. B. Double 5
Graph each polynomial function. Give the domain and range. 1 f(x) = = x³ + 3 2
Find each product. 4x(3x³ + 4) (3x³ - 4)
Find each product. (y – 5)²
Let ƒ(x) = x2 and g(x) = 2x - 1. Match each expression in Column I with the description of how to evaluate it in Column II. I (gᵒf)(5) II A. Square 5. Take the result and square it. B. Double 5
Find each product. (3q² + 2q - 4) (q - 5)
Find each product. (6r² - 1)(6r² + 1)
Add or subtract as indicated. (3r+ 8) - (2r - 5)
Evaluate each expression. 5-1 + 6-1

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