3. You are trying to dunk a basketball. You need to jump 2.5 ft in the air to dunk the ball. The height that your feet are above the ground is given by the function h(t) =-16t +12t. What is the maximum height your feet will be above the ground? Will you be able to dunk the basketbal1? Answer all questions in the story problem, present a picture/graph, and explain your answer.

Part 4:  Hitting the ball into the parking lot   As Juan continued his hitting practice, one of the balls flew over the center field stands and into the parking lot.  “Did you see that shot”, he yelled at the friends.  “The ball hung in the air for at least 10 seconds”, he exclaimed.   The formula for this hit is: h(x) = -16xsquared + 83x +4   where h is the height of the ball and x is the number of seconds the ball is in the air.   How can Juan provide proof that the ball actually hung in the air for 10 seconds?       How long did the ball hang actually hang in the air? Is Juan able to mathematically back up how long he says the ball was in the air?

Pls help ASAP

For the quadratic equation below, answer the following three questions. y=x^2+4x-21   Identify whether the relation has a maximum or minimum.       Find the y-intercept.         Find the zeros.