In how many hours did the balloon reach its maximum height? f(x) = (x - 3)^2 + 72

A. 3 hours

B. 72 hours

C. 5 hours

D. 9 hours

i would need to see the dot plot : )

b

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10