True or false , look at picture !

Can any one me with the answers to these questions asap?

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240

Find the root(s) of f (x) = (x- 6)2(x + 2)2.