Question

Select the correct answer from the multiple choice below.

Answer 1

28 mi/gallon
In the beginning Sully has 16 gallons of fuel, and can drive
16 gallons*28 mi/gallons=448 mi
At the x=0, y=448 mi - this is y-intercept 
28 mi/h is a slope ( for one h  - 28 mi, for 2 h - 28*2 and so on)

The function is y=448-28x. 
Answer is C.

Answer 2

(Could easily be wrong, Math is not my strongsuit) I think its D, because you are suppose to convert the fuel tank capacity to the miles per gallon.