A homeowner called in a painter to paint the bedroom walls and ceiling. The bedroom is 15 ft. long, 12 ft. wide, and 10 ft. high
. The room has two doors each 3 ft. by 8 ft. and three windows each 3 ft. by 5 ft. The doors and windows do not have to be painted. A gallon of paint can cover 300 square feet. How many gallons of paint must he use? Show all of your steps
I am assuming you wrote the problem wrong. Is it a^2? A^2 -4A-21=0 (A-7)(A+3)=0 A=7 A=-3, ignore the negative number because it doesn't make sense if you plug in for a. length=a+3=7+3=10 Width=7=a
