Math Linear Review

The water level in a pool is decreasing by 2.5 inches per day. If the water level is currently 4 feet, about how long will it take for the water level to be at 3.5 feet?

• 0.2 days

• 2 days

• 2.4 days

• 5.1 days

The cost of a taxi ride is $5 plus $0.35 cents per mile. Which equation could be used to calculate the total cost, y, of a taxi ride x miles long?

• y = x + 5.35

• y = 5x + 0.35

• y = 0.35x + 5

• y = 0.35x + 5.35

Jack stopped at the gas station to fill his truck with gas. - The truck can hold 26 gallons of gas. - The tank had 3 gallons of gas in it when Jack stopped. - The gas pump fills at a rate of 7 gallons per minute. Which equation represents the amount of gas, g, in the truck t minutes after Jack starts pumping the gas?

• g = 7t

• g = 7t + 3

• g = 7t + 23

• g = 7t + 26

Which point lies on the graph of y = 2x + 5?

• (3, 10)

• (-5, -5)

• (-5, -15)

• (-3, -11)

• -8

• -2

• 4

• 16

• y = -5x + 44

• y = -5x - 140

• y = 5x - 106

• y = 5x + 170

• The initial amount Josh put in the jar was $225.

• The initial amount Josh put in the jar was $75.

• The amount of money Josh adds to the jar each month is $45.

• The amount of money Josh adds to the jar each month is $60.

What is the y-intercept of the function?