A disc is thrown into the air with an upward velocity of 20 fts. Its height nin
teet after t seconds is given by the function h = -16t2 + 200 + 6. What
maximum height the disc reaches? How long does it take for the disc
the maximum height? How long does it take for the disc to descend to 3
above the ground?

3+x

step-by-step explanation:

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q

the first domain and range set to the left is matched with the top relation, and the second set the set in the middle goes with the bottom relation.