A car company tested a sports car on a road with different inclines. The test driver tested the car by driving a distance of x miles on a flat road, (x^2 + 3) miles downhill, and (x - 7) miles uphill. Which simplified expression is equivalent to the total distance, in miles, for which the car was tested?

3x^2 - 4

3x^2 + 10

x^2 + 2x - 4

x^2 + 2x + 10

Please help, I give medals! :)

Question

A car company tested a sports car on a road with different inclines. The test driver tested the car by driving a distance of x miles on a flat road, (x^2 + 3) miles downhill, and (x - 7) miles uphill. Which simplified expression is equivalent to the total distance, in miles, for which the car was tested?

 3x^2 - 4

 3x^2 + 10

 x^2 + 2x - 4

 x^2 + 2x + 10

Please help, I give medals! :)

anonymous · Answer

@dan815 
@mathslover 
Help?

anonymous · Answer

Just add them all up.
x^2 + 2x - 4