The height of a football after it's been kicked from the top of a hill is h=2(-2-4t)(2t-5) where h is height and t is time in seconds how long was football in the air?

2.5 seconds.

Step-by-step explanation:

When the football reaches the ground h = 0, so:

2(-2 - 4t)(2t - 5) = 0

so either -2 - 4t = 0 or 2t - 5 = 0

so -4t = 2 or 2t = 5

t  = -1/2 , t = 5/2 = 2.5 seconds.

WE ignore the negative t , so

Time that the ball was in the air = 2.5 seconds.

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6