*In a scene from "The Martian" Matt Damon
shoots a flare straight up into the sky. The
height (in feet) of the flare after t seconds is
given by
s(t) = -3t? + 100t +3
What is the velocity of the flare when it is
moving toward the ground and its position is
equal to 131 feet?
(

$12. that is my answer.

step-by-step explanation:

for the free

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

d is the only accurate one

step-by-step explanation: