Question

A teenager who is 5 feet tall throws an object into the air. The quadratic function f(x) = - 16x ^ 2 + 64x + 5 is wheref () is the height of the object in feet and is the time in seconds. The function in vertex form is Select one The object hits the ground after about Select one

Answer 1

The quadratic function in vertex form would be f(x) = -16(x-2)^2 + 69, where the vertex is at (2, 69).

The object hits the ground after about 4.5 seconds.