Umm its cold out. the temperature is -8. what are you asking?
Answer:

and 
Step-by-step explanation:
Given

Required
Express as

In functions:

So, we have:

g(x) can be set to x and f(x) to x + 2
Hence:

When:
and 
the average rate of change in the closed interval [ a , b ] is
( f(b) - f(a)))/(b - a)
f(b) = f(3) = 3² + 3(3) = 9 + 9 = 18
f(a) = f(-2) =(-2)² + 3(-2) = 4 - 6 = - 2
= (18 - (-2))/(3 - (-2)) =20/5 = 4
Answer:
b
Step-by-step explanation:
i would wait until someone eltse answers just to be sure