Algebra

Question 3 (10 points)

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Solve the equation below. Show all work and show the complete check of your answer in the original equation.

https://learn.umuc.edu/content/enforced/285837-027766-01-2175-OL3-7380/Screen%20Shot%202017-07-04%20at%2011.02.28%20AM.png?_&d2lSessionVal=XYgOYZgP16djtzc9tsHMJLUQW

Question 4 (10 points)

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Question 4 options:

Solve the equation below. Show all work and show the complete check of your answer in the original equation.

https://learn.umuc.edu/content/enforced/285837-027766-01-2175-OL3-7380/Screen%20Shot%202017-07-04%20at%2011.03.13%20AM.png?_&d2lSessionVal=XYgOYZgP16djtzc9tsHMJLUQW

Question 5 (5 points)

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The formula for perimeter of a rectangle is given by P = 2L + 2W, where P = perimeter, L = length, and W = width.

Solve the formula for W.

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Question 6 (5 points)

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The formula for perimeter of a rectangle is given by P = 2L + 2W, where P = perimeter, L = length, and W = width.

Use the new version of the formula you found in part (5a) to find W, the width of a rectangle with perimeter 72.4 meters and length 23.4 meters. Include units with your answer.

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Question 7 (1 point)

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Problems 6 – 10: You are a high school counselor working with seniors as they apply to college. Part of your job is to help students apply for financial aid, and you therefore keep careful track of trends in the rising costs of college tuition and fees. Given the information in the following table, answer each of the questions below.

Year	x Years since 1987	y Average Tuition and Fees at Public 4-year Institutions in the US
1987	0	$8350
1997	10	$12527
2002	15	$11620
2011	24	$16082
2016	29	$19330

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True

False

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Question 8 (9 points)

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Find the rate of change of tuition from 1987 to 1997. Show all work and round your answer (if necessary) to the nearest cent. Write a complete answer to the question asked.

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Question 9 (10 points)

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Find the rate of change of tuition from 1987 to 2016. Show all work and round your answer (if necessary) to the nearest cent. Write a complete answer to the question asked.

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Question 10 (10 points)

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Question 10 options:

Based on the data from the years 1987 to 1997, the estimated relation between annual tuition and fees, y, and time after 1987, x, is given by the following formula:

y = 355.54x + 8035.44

Use the formula to predict the cost of tuition and fees at a US four-year public institution in the year 2020.

Question 11 (10 points)

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Question 11 options:

Use the formula to predict the cost of tuition and fees at a US four-year public institution in the year 2020.

y = 339.31(x) + 8490