Question

A tank full of water is leaking at a constant rate for 15 minutes. The equation

y=-8x+ 500
describes the amount of water in the tank, where y is the number of liters and
xis the number of minutes that has elapsed since the tank started to leak.
Which statement is true?

A. There were 8 liters in the tank when the leak started, and it is decreasing by 500 liters per minute.

B. There were 8 liters in the tank when the leak started, and it is increasing by 500 liters per minute.

C. There were 500 liters in the tank when the leak started, and it is decreasing by 8 liters per minute.

D. There were 500 liters in the tank after 15 minutes, and it is
decreasina bv 8 liters per minute.

Answer 1

C. There were 500 liters in the tank when the leak started, and it is decreasing by 8 liters per minute.

Explanation:

-8x is the rate of the leak and 500 is the initial value for water in the tank.