Sorry but I can't break it down this is all one question.

Use the function f(a:) = $3 - 935:2 |- 24:13 -- 20 to answer the questions below. a. The intervals of increase can be written in the the form (-00, a) U (5, 00) and the interval of decrease can be written in the form (a, b) where a, b E I. Record the value of a, in the first blank below {1 mark} I. Record the value of b in the second blank'below (,1 mark)- ll b. The region where the function' Is concave dlown can be written in the form ( 00, m) and the region where the functIon Is concave up can be written intheform (m, 00) l E Record the value of m in the third blanIkb-ellow {1 mark] c. f(.'13) has 1 local maximum and 1 local minimum. Record the coordinate of the local maximum as an ordered pair (xx) in the fourth blank below (1 mark)