Algebra 1 EOCA review JB

The ordered pairs below represent a function.

What is the domain of the function?

{(−4, 2),(−2, 1),(0, 0),(2,−1)}

• {−1, 0, 1, 2}

• {−4,−2, 0, 2}

• {0, 0, 1, 2, 2}

• {−4,−1,−2, 0, 1, 2}

Jeremy has an $8 gift card to use to buy comic books. Each comic book costs $5.25. The function f(x) = 5.25x − 8 represents the amount of cash required to purchase x comic books after using his gift card. How much cash does Jeremy need to buy 3 comic books?

• $7.75

• $8.25

• $10.50

• $15.75

Penelope graphed the function below using the domain {0, 1, 2, 3, 4}.

x + y = 4

Which graph did Penelope make?

• 
• 
• 
• 

If f(x) = 11 − 6 (x − 8), what is f(-3)?

• 41

• -55

• -19

• 77

A bathtub is filling with water. The table below shows how many gallons of water are in the bathtub after a certain number of minutes.

What is the average rate of increase in the number of gallons per minute from 4 minutes to 12 minutes?

• 0.4 gal/min

• 3.5 gal/min

• 2.3 gal/min

• 0.3 gal/min

Which of the following relations is a function?

• 
• 
• 
• {(0, 1), (0, 2), (1, 3), (1, 4)}

The water at the end of a pier was 28 meters deep at midnight. As the tide came in, the water depth increased at a rate of 0.012 meters per minute. Which equation can be solved to find t, the time in minutes it took the water depth to reach 30 meters?

• t/0.012 - 28 = 30

• 0.012t + 28 = 30

• t/0.012 + 28 = 30

• 0.012t - 28 = 30

Which value of x makes this equation true?

−4(3 − x) + 2x = 8

• 20

• − 2/3

• 10/3

• -4

What value of x makes this equation true?

2 (3x − 8) = 2 (7x + 2)

• x =− 5/4

• x = 5/4

• x = -5/2

• x = 5/2

The formula for finding the perimeter of a rectangle is shown below.

P = 2l + 2w

What is that same formula rewritten for w in terms of the other variables?

• w = − P/2 - L

• w = P/2 - L

• w = - P/2 + L

• w = P/2 + L