Unit Test — Cumulative exam

Question 1

What is the solution to the inequality 28 > 4 – 2p?

Revolt · Accepted Answer

{p | p > –12}

Question 2

The value of a computer depreciates with age, as shown in the table.Value of a Computer

Revolt · Accepted Answer

f(t) = 1,600(0.8)t

Question 3

The constraints of a problem are listed below. What are the vertices of the feasible region?

Revolt · Accepted Answer

(0, 0), (0, 0.5), (1.5, 1), (3, 0)

Question 4

Samir, a carpenter, spent $300 on specialty tools to make toy horses for children. For each horse he makes, he spends $75 on supplies. He charges $125 for each horse. How many horses must Samir sell in order to break even?

Revolt · Accepted Answer

6

Question 5

What is the missing step in solving the inequality 4(x – 3) + 4 < 10 + 6x?1. The distributive property: 4x – 12 + 4 < 10 + 6x2. Combine like terms: 4x – 8 < 10 + 6x3. The addition property of inequality: 4x < 18 + 6x4. The subtraction property of inequality: –2x < 18 5. The division property of inequality: ________

Revolt · Accepted Answer

x > –9

Question 6

What is the vertex of the graph of f(x) = |x – 13| + 11?

Revolt · Accepted Answer

(13, 11)

Question 7

Sun, a kayaker, paddles 8 miles upstream (against the current) in 2 hours. Returning to her original location, she paddles downstream (with the current) the same distance in 1 hour. The equations represent x, the paddling speed, and y, the speed of the current.2(x – y) = a b(x + y) = 8Which are true? Select two options.a = 8b = 8a = 1b = 1a = b

Revolt · Accepted Answer

a = 8; b = 1

Question 8

The table compares x, the number of minutes of television Sam watched each day, to y, the number of minutes she spent exercising. The function y = –0.78x + 95 models the data in the table.

Revolt · Accepted Answer

72 minutes

Unit Test — Cumulative exam Answers

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