Afootball is kicked into the air from an initial height of 4 feet. the height, in feet, of the football above the ground is given by s(t)=-16t^2+50t+4, where t is time, in sevonds, and t > \= 0. at what time will the football be 25 feet above the ground?

a. 3.625 seconds
b. 3.20 seconds
c. 5 seconds or 3.625 seconds
d. 5 seconds or 2.625 seconds