The slope is always going to be rise over run so the answer is 3/12 but in simplest form it is 1/4
H=-16t^2+56t+1, the airplane is shot up from a platform 1 foot above the ground, so 1= - 16t^2+56t+1, we solve this equation
(- 16t+56)t=0, (- 16t+56)=0 or t=o, - 16t+56=0, implies t =3.5s
so the answer is C)3.5 seconds
63 because both angles are the same
Eighteen tens < 21 × (5+5)
Hope this helps!
Can you give more information
