Answer:
It's y = 3
Step-by-step explanation:
Reason why it's not x = 3 is because x is on the left to right or horizontal plane, therefore it would be y because y is on the vertical axis. If using x, it would be a vertical line on x while using y would create a horizontal line.
1/2x - 9 = 4
1/2x = 4 + 9
1/2x = 13
x = 13 / (1/2)
x = 13 * 2
x = 26 <===
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.
9 = 1 + 1.5 ln (x + 1)
8 = 1.5 ln (x + 1)
16/3 = ln (x + 1)
e^(16/3) = x + 1
x = e^(16/3) - 1
x = 206.127 days of practice
