Answer:
3.7x10^8
Step-by-step explanation:
did it on calc
Answer:are there choises?
Step-by-step explanation:
hi
-16t²+250 = 75
-16t² = 75 -250
-16t² = -175
t² = -175 /-16
t² = 175/16
Here there si two solutions : t =
and t = - 
However, as time cannot rewind, we will keep only positive solution
So t = 
in seconds it will be : 3.3 seconds
Plug it in
7(4) + 8(5) which would be 28 + 40
Answer: 68