In a Northwest Washington County, speeding fines are determined by the formula
F=7(s – 65) + 70
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 $266, how fast was the person speeding?

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From the given information the person was speeding at 93 miles per hour.

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

The speeding fines are determined by the formula

F=7(s – 65) + 70

where F is the cost, in dollars, of the fine

So, If a fine comes to $266, then

F=7(s – 65) + 70

266 = 7(s – 65) + 70

266 = 7s - 455 + 70

266 = 7s - 385

651 = 7s

Therefore, s = 651/7 = 93

The person was speeding at 93 miles per hour.

Learn more about equations here;

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