Notes on the CHapter 7 Review

1) On problem # 12 you need to find 3 unknowns but you've been given 4 equations. You only need to use 3 of them and it doesn't matter which you pick.

2) #13 b asks you to sketch the system of inequalities and then to find the points of intersection. I found the intersection points (you can see my work underneath the shading) but the calculation was a little messier than you'd have to get into on a test so you can disregard finding the intersection points if you want.

Thanks and good luck!

Mr. Joseph