What are the answers for A. and B. below?

Question

The cost for installing carpeting in a room that is x square feet can be determined using the equation y = 4x + 50.

a) If the cost was $130, how many square feet was the room?

b) If your dining room is 10 ft. by 12 ft., how much will the carpet cost?

Answer 1

The cost for installing carpeting in a room that is x square feet can be determined using the equation y = 4x + 50.

a) If the cost was $130, how many square feet was the room?

b) If your dining room is 10 ft. by 12 ft., how much will the carpet cost?

for part a) y is your cost, so use $130 for y in the equation y = 4x + 50 to solve for x

for part b) now that you know x, use x in the equation y = 4x + 50 to solve for y

Let me know if you need further help on how to solve it

Miss Julie