Question

Malaysia hits a softball straight up at a speed of 120 ft / sec. Her bat contacts the ball at a height of 3 ft above the ground. This scenario can be modeled by the function f(x) = -16x^2 + 120x +3, where x represents the time elapsed (in seconds) since the ball was hit and f(x) represents the ball's height (in feet) a. What do the x intercepts represent in this scenario? b. When does the ball reach its maximum height? (What feature is being requested in this question?) a. x coordinate of vertex b. у coordinate of vertex C. x coordinate of roots d. y coordinate of roots c. Justify your answer to #b.d. What is the value of 3 in the context of the question?

Answer 1

a. x intercepts represent the time that the ball was at 0 feet.

b. answer is a. x coordinate of vertex

c. Since it is time you need, it is the x coordinate of vertex (maximum height)