Answer: 
Step-by-step explanation:
1. You have the following information given in the problem above:
- y represents total earnings in dollars .
- x represents hours worked.
2. Keeping on mind that the expression must model the wages of someone who makes $11.50 in an hour, this amount of money per hour must multiply the hours worked, which is represented by x.
3. Therefore, you can write the following equation:

Answer:
V=128π
Step-by-step explanation:
V=πr^2h
V=π*4^2*8
V=π*16*8
V=128π
slope = m = (y2 - y1)/(x2 - x1)
(y2 - y1)/(x2 - x1) = m
(-1 - 1)/(-1 - x) = 2/7
-2/(-1 - x) = 2/7
2/(x + 1) = 2/7
1/(x + 1) = 1/7
x + 1 = 7
x = 6
Answer: x = 6