Write the system of equations associated with the augmented matrix. do not solve. left bracket start 3 by 4 table 1st row 1st column 1 2nd column 0 3rd column 0 4st column 9 2nd row 1st column 0 2nd column 1 3rd column 0 4st column 1 3rd row 1st column 0 2nd column 0 3rd column 1 4st column 10 endtable right bracket 1 0 0 9 0 1 0 1 0 0 1 10

2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6

answer is

b.

11

hope you get this one right.