Question

Q ,# 14 please help with this

Answer 1

Its C so 90 ft would be your answer 

Answer 2

For this case we have the following polynomials:
 $h1 (t) = -16t ^ 2 + 150t h2 (t) = -16t ^ 2 + 165t$
 We evaluate the polynomials for the moment of the explosion, t = 6:
 $h1 (6) = -16 * (6) ^ 2 + 150 * (6) = 324 h2 (6) = -16 * (6) ^ 2 + 165 * (6) = 414$
 Then, the height difference is given by:
 $h2 (6) - h1 (6) = 414 - 324 = 90 feet$
 Answer:
 90 feet
 Option C