Every time you go to the store you lose 2 dollars and you went to the store 4 times.
Answer:
3x-9
Step-by-step explanation:
2x(2+1)-3(x+3)
=4x+2x-3x-9
=6x-3x-9
=3x-9
I hope this will help you
You'll need to calculate the surface area to be painted. The room has two ends, 2 sides and 1 ceiling. The area of the ceiling is 18*20. The area of the two ends of the room is 2(8*18). The area of the two long walls is 2(8*20)
Add these areas together: 18*20 + 2*8*18 + 2*8*20, or 968.
That's 968 square feet. Since each can contains enough paint for 400 square feet of coverage, divide 968 by 400:
968
----- = 2.42. This means having to purchase 2.5 (gallons)
400 This answer is accurate to the nearest 0.5.
