Please help with explanation!

Consider the function 1(I) = 13-12 + 2x+2 Find the average rate of change of this function on the interval (-4, -1). By the Mean Value Theorem, we know there exists a c in the open interval (-4, -1) such that f'(c) is equal to this average rate of change. Find the value of ca the moral wreck Note: You can earn partial credit on this problem.Find all critical values for the function 1 (7 ) = Ar 9r2 + 7 and then list them (separated by commas) in the box below. List of critical numbers