Suppose an object moves along the y axis so that its location is y=f(x)=x^2+x at time x (y is meters, x is in seconds).
Find:
A) The average velocity (the average rate of change of y with respect to x) for x changing from -2 to 2.
B) the instantaneous velocity at x=-2 seconds (find f'(x) and then evaluate when x=1)