Acellus
Find the circumference.
Use 3.14 for n.
r = 4 cm
C = [?] cm
C=td

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

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?

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)