find the average rate of change of each function on the interval specified for real numbers
- p(x)=3x+4 on [2,2+h]
- a(t)=1/t+4 on [9, 9+h]
- j(x)=3x^3 on [1,1+h]
- f(x)= 2x^2-3x on [x,x+h]
I cannot find any help regarding these questions. I am not sure on the steps it takes to complete them.