SOLUTION: In a Northwest Washington County, speeding fines are determined by the formula:
F = 8(s−35)+80
where F is the cost, in dollars, of the fine if a person is caught driving
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Question 1164454: In a Northwest Washington County, speeding fines are determined by the formula:
F = 8(s−35)+80
where F is the cost, in dollars, of the fine if a person is caught driving at a speed of s miles per hour.
If a fine comes to $144, how fast was the person speeding?
The person's speed was ______ miles per hour.
Found 2 solutions by ikleyn, Boreal:
Answer by ikleyn(52817) (Show Source): You can put this solution on YOUR website!
.
This formula and the entire formulation looks strange, since it does not define a speed limit.
Do they collect fines from everything what is moving in their county ?
/\/\/\/\/\/\/\/
Please do not explain to me that this formula starts working at s >= 25 mph.
I can derive it on my own.
Simply make your formulation correct.
Otherwise, I may think that if my speed there is under 25 mph, then they will pay me back.
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
144-8(s-35)+80
64=8(s-35)
8=s-35
s=43 mph
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