Using the graph below, what prediction is expected using the trendline for the year 2010? Job Opportunities at Company Z per year 11000 y = -130.36x + 269125 10000 9000 8000 7000 6000 5000 4000 1990 1995 2000 2005 2010 2015100 y =-1.3027x + 95.367 Percent of people who Excersise daily & % & 20 & 10 0 5 10 15 20 25 30 35 40 45 50 55 Weeks after the start of the year What is the prediction for the percent of people that are exercising during the 30th week? Is this value above or below the actual value? The prediction is the real value. Using the data estimate the real value for the last week of the year using a whole number. Is the prediction above or below the actual value? The prediction is the real value. 200 190 180 y = 0.7794x - 1435.5 170 160 150 140 130 Average Minutes to Clean up a Car Accident 120 110 100 90 . 80 70 60 50 1990 1995 2020 1975 1980 1985 2000 2005 2010 2015 1970 In what year was the highest number of minutes in an accident reported? What value does the prediction make for the starting year, 1970? Finish the interpretation sentence for the slope: The average minutes to clean up a car accident by for every year after 1970.Would you describe this correlation as strong, moderate, or weak? The actual value for the number of texts in the year 2000 was 30 trillion. Quantify: How does this compare to the prediction? The actual value of 30 trillion is than the predicted value in the year 2000. (Your answer should have a number and state whether it is more or less.) The fair market rental rate for Columbus was $630 in 2013 and $551 in 2003. Find the rate of change for rent in Columbus during this period. Question 2 3 pts The psychology club is having a self-proclaimed psychic come to their campus fund-raising event to demonstrate his abilities. He charges $200 for these events, and the club is charging $1.50 for tickets with a chance to have the psychic read the ticket holder's mind. Let x represent the number of tickets sold and y represent money. Fill in the items below for the linear model. y = X + How much would the club gain or lose by selling 100 tickets? How many tickets are needed to break even? (Round to nearest whole ticket.) Question 1 Complete the sentence that describes the slope from the graph below. Millions of pounds of Chocolate produced 510 500 y=-1.1202x +476.94 490 . o 470 450 8 | e | . 430 420 0 5 10 15 20 25 30 35 Weeks after the start of the year Chocolate production has every million pounds. 40 45 by Using the graph below, what prediction is expected using the trendline for the year 19907 Average Minutes to Clean up Accident 170 130 110 70 y=1.2429x - 2359.2 1570 1975 1980 1985 1950 1995 2000 2005 2010 2015 2020 Year Complete the sentence that describes the slope from the graph below. 190 170 y = 0.8049x - 1485.5 150 130 Average Minutes to Clean up Accident 110 90 70 50 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 Year The time to clean up an accident has by for every30 y = 0.0478x - 77.063 25 24 23 22 20 20 19 19 16 16 16 15 ............16............ 14 New Stars Found in Universe 15 12 10 11 10 ..../....... 10 10 0 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 2020 Year What is the slope of this model? What is the meaning of this? (Finish the sentence.) Each that goes by, approximately are found in the galaxy. What is the predicted amount for the year 2000? The prediction is below the real data point. Quantify: How much is the prediction below the real value?Your jewelry business orders $405 in supplies. You can usually sell an earring/ring set for about $45 each. How many sets do you need to sell each month to break even? how much money could be made if you sold 17 sets? Question 8 3 pts In 2000, the total amount of a certain bird population (species of bird of paradise) was recorded at 47,000 in a city. In 2005, the same survey was made and the same bird population was estimated at 59,000. If the trend continues, in what year will the bird population reach 100,000? (Round to the nearest year) Each week 5 new office phones are installed in a major network company. At the beginning of March, 200 phones had already been installed. Write a linear equation to model this situation. Do not use spaces in the equation. Use your equation if the company wanted to replace all phones in the building (500 total). How many weeks would it take to finish this project? Question 6 3 pts Although not so common now, consider a phone plan that does not have unlimited texting. Your base plan costs you $30 a month and each text sent or received is only 12 cents. Write an equation to describe the total monthly cost of your bill with x text messages and y cost in dollars. Do not use spaces for your answer. In one month 217,000 messages were sent between two brothers in Philadelphia. What was their approximate bill? (This is a true story!) In Indiana, the minimum wage a server earns hourly is $2.13. Let us consider that a server can make $5.00 from each table in their section of the restaurant. Construct a linear model from the problem above. (Do not use the $ symbol.) y = X+ Use your model to estimate the amount of money a server can earn in 1 hour if they attend to 7 tables. Question 4 2.5 pts If a population is recorded at 1,200 in the year 2000 and the rate of increase is a steady 50 people each year, what will be the population in 2018? What year will the population be 7,5007? Total Texting after 1990 70 y =1.7506x + 5.2524 20 Total Texts Sent or Recieved (In trillions) 10 0 2 4 6 8 10 12 14 16 18 20 22 Years After 1990 (You can leave your answer in trillions for all questions.) What prediction is made for the year 1995? What value could be predicted in the year 2025? Would you describe this correlation as strong, moderate, or weak? 24 26 28