Section 7.5

Problems 6, 10, 18, 20, 35 - 37.
Note that you do 6 & 10 using the cofactor method and 18 & 20 using row-reduction.

Section 7.6

Problems 2, 10

Lab Book

Page 170, problems 1-8

Section 7.7

Problems 5, 16, 18, 23, 26, 27