Consider the system of linear equations and the matrix equations below.
-X+ 3y = 2
4x-2y = 22
-1
3
2
4
-2
22
What is the value of x in the equation?
-36
3
7
64

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

if the rectangular pool has a area of 192 square ft. and length of 15 ft. you must divide 15 into 192. 192 ÷ 15 = about 13 ft.