Whats the answer for #3

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

What are the sotions to the quadratic equation 9x^2=4

Math each whole number with a rational,exponential expression