Please help!

1.) You are the crew chief of the Algebra 2 formula racing team. Your current task is to
determine fuel consumption of both cars. Car A travel x² + 3x miles and Car B travels 2x + 8 miles. Based upon tire wear (x), the cars will use x² + 4x gallons of fuel.

a.) What is the mileage
(miles/gallons) for each car?

Car A:

Car B:

b.) What is the total mileage for both cars in simplified form?

Total:


2.)Solve for x:
Sqrt 2x+3=−x+6