I'll fan, medal, whatever you like, just pls
the graph below shows the height of a kicked soccer ball f(x), in feet, depending on the distance from the kicker x, in feet:

graph of quadratic function f of x having x intercepts at ordered pairs 0, 0 and 0, 20. the vertex is at 10, 15.

part b: what is an approximate average rate of change of the graph from x = 12 to x = 15, and what does this rate represent? (4 points)