Question

The amount of fish caught per week on a trawler is a function of the crew size assigned to operate the boat. Based on past data, the following production schedule was developed:
CRRW SIZE
(Number of workers) Amount of Fish caught per week
(Hundreds of LBS)
2 3
3 6
4 11
5 19
6 24
7 28
8 31
9 33
10 34
11 34
12 33
a. Over what ranges of workers are there (i) increasing, (ii) constant, (iii) deceasing and (iv) negative returns?