Iknow this is long but i really need someone's . given the function f(x)=4(2)^x, section a is from x=1 to x=2 and section b is from x=3 to x=4. part a: find the a stage rate of change of each section. part b: how many times greater is the average rate of change of section b than section a? explain why only one rate of change is greater than the other.