A golf ball flies up into the air after being hit from the ground. After 1.6 seconds, the ball reaches a maximum height of 12.8 meters.
It returns to the ground 3.2 seconds after it is hit.
Let f (x) be the height (in meters) of the ball x seconds after it is hit. Then, the function f is quadratic. (Its graph is a parabola.) Write
an equation for the quadratic function f.
