Question

If a football player passes a football from 4 feet off the ground with an initial velocity of 36 feet per second, how long will it take the football to hit the ground? Use the equation h = -16t2 + 36t + 4.

A) quantity of 9 plus or minus square root of 65 all over 8

B)9 plus or minus square root of 65 end root over 8

C)quantity of 9 plus or minus square root of 97 all over 8

D) 9 plus or minus square root of 97 end root over 8

Please explain in detail for I understand not.