Question

Need help ASAP hurry pls

Answer 1

B

Explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

`(f(b)-f(a))/(b-a)`

Here a = 1 and b = 3

f(b) = f(3) = 27 ← value of y corresponding to x = 3

f(a) = f(1) = 3 ← value of y corresponding to x = 1, thus

average rate of change =
`(27-3)/(3-1)` =
`(24)/(2)` = 12 → B

Answer 2

Explanation:

12

I think so