**PLEASE HELP MY ASSIGNMENT IS DUE TOMORROW**
Mia fills her 15 gallon gas tank before going on a road trip with her friends. Her car get approximately 35 miles per gallon.

a. Write an equation to model the amount of gas left in the car as a function of distance

b. Define your variables

c. How many miles will Mia be able to drive her car before half a tank remains? Show your work.