Answer: 81. If you subtract 10% from the amount of 90, you get 81.
115 is the slope, and 5 is the y intercept. They tried tricking you by making x turn into m so you think you don't know the slope
Answer:
The answer you're looking for is B. 27.55 m
5x + 4y = 32 ⇒ 45x + 36y = 288
9x - 1y = 33 ⇒ <u>45x - 5y = 165</u>
<u>41y</u> = <u>123</u>
41 41
y = 3
5x + 4(3) = 32
5x + 12 = 32
<u> - 12 - 12</u>
<u>5x</u> = <u>20</u>
5 5
x = 4
(x, y) = (4, 3)
1.44 per kg
take 1.3 x 2, then subtract 12.7, finally divide that by 7
