## Precalculus (6th Edition) Blitzer

a. See figure. b. $(1,5),(8,5),(8,-2)$ c. $13$, $34$, and $20$.
a. We can graph the inequalities as shown in the figure. b. We can identify the corners of the solution region as $(1,5),(8,5),(8,-2)$ c. The value of $3x+2y$ at each of the above points can be found as $3(1)+2(5)=13$, $3(8)+2(5)=34$, and $3(8)+2(-2)=20$.