need right !
zoe’s living room rug is 3 feet wide and 7 feet long. she will cover the rug with 6-inch square cardboard pieces for a painting project. how many cardboard pieces will zoe need?

answer format: zoe will need pieces of cardboard.

Zoe will need 504 pieces of cardboard.

Step-by-step explanation:

Length of room = 7 feet = inches

Width of room =3 feet = inches

Area of room in square inches

⇒ Length in inches width in inches

⇒

⇒ square inches

Area of each cardboard piece used to cover the rug =6 square inches

So, number of cardboard pieces Joe will need to cover the rug would be

⇒

⇒

⇒

So, Zoe will need 504 pieces of cardboard.

rick would give her the best deal as he will charge $8.88 per hour

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18