Answer:
10s+40m+61l=net profit
Step-by-step explanation:
subtract the value you pay from the value you charge
The x intercepts must be 1 and -4, so C.
One could be |x|<-2
This could be one since no matter what you put in for x, it will always be positive.
Well, I would just reverse it. It seems you just have to reverse the whole problem.