Chapter 3 - Section 3.1 - Graphing Equations - Exercise Set - Page 127: 77

b.

Moe's description matches graph b. Moe works 40 hours per week until the fall semester, and graph b shows that the y-coordinate (corresponding to hours worked per week) is 40 until September. Also, Moe works 60 hours per week starting in mid-December, and graph b shows that the y-coordinate is 60 beginning halfway between December and January.