Aball is thrown upward from the top of a building the function below shows the height of the ball in relation to sea level f(t) = -16t^2 +32t+90 the average rate of change of f(t) from t=4 seconds to t=6 seconds is feet per second

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?