Question

A 300-liter tank initially contains 175 liters of fuel. A pump empties the tank at a rate of 7.5 liters per minute. Which of these represents a function that models the number of liters of fuel in the tank after x minutes? A. f(x) = 175 – 7500x B. f(x) = 300 - 7.5.x C. f(x) = 300 - 7500x Df(x) = 175 - 7.5x​

Answer 1

Answer:

F(x) = 175 - 7.5x ; D

Step-by-step explanation:

Here, we are to select the equation that best model the situation;

The total size of the tank is 300 liters

But what we have in this case is just 175 liters

And we also have a discharge date of 7.5 liters per hour

In x hours, the amount of liters discharged will be x * 7.5 = 7.5x liters

So the amount of fuel remaining in the tank

will be;

175 - 7.5x liters