Let
f(x) = x^2 + 6 x - 7.

(A) Use interval notation to indicate wheref(x) is increasing.

(A) Use interval notation to indicate where

** Note: ** When using interval notation in WeBWorK, remember
that:

(i) You use 'I' for

(ii) 'U' for the union symbol.

Increasing:

(B) Use interval notation to indicate where

Decreasing:

(C) Find the average of the

Note: If there are no local maxima, enter -1000.

Average of

(D) Find the average of the

Note: If there are no local minima, enter -1000.

Average of

You can earn partial credit on this problem.