Question

A tank contains 550 gallons of water. when the valve is opened, the tank drinks at a rate of 12 gallons per minute. which function shows relationship between the time t the value is opened and the amount of water in the tank?

Answer 1

that one I will quite don't understand be more specific

Answer 2

amount-drained=amoutleft
drained=12 times t
amount=550

550-12t=amountleft
or A(t)=-12t+550