Evaluate y (x+x) +3, where x =1 and y=3

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?

Acd that is originally priced at $15.85 red-tagged for the sale. what is the sale price of the cd

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer