If the area of a rectangle is w^2 - 8w - 9, which of the following could be the side length of the rectangle?

a.) w - 8
b.) w + 8
c.) w - 1
d.) w + 1
e.) w + 9

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Ineed no it anyone can see this

When you find the area of a triangle do you use in. or in2