deleted.
We need to solve this
-16t^2 + 60t = 56 rearrange as
16t^2 - 60t + 56 = 0 divide through by 4
4t^2 - 15t + 14 = 0 factor
(4t - 7) (t - 2) = 0
Set each factor to 0 and solve for t and we get 7/4 sec and 2 sec
7/4 sec is correct = 1.75 sec
