A ball is shot from a cannon into the air with an upward velocity of 40ft/sec. The equation that gives the height(h)of the ball at any time(t) is: h(t)=-16t^2 + 40ft +1.5.How long does it take the ball to reach a height of 20 feet?

where is the figure

a. she will receive a refund of $278.

step-by-step explanation:

pls refer ro the top for answer

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)