Question

In cherokee county, the fine for speeding is $17 for each mile per hour the driver is traveling over the posted speed limit. In cherokee county kirk was fined $221 for speeding on a road with a posted limit of 30mph. Kirk was fined for traveling at what speed in miles per hour

Answer 1

H

Explanation:

The fine for speeding is $17 mile per hour. Thus, for speeding for a total of x miles per hour above the posted speed limit of 30 mile per hour, there will be a fine of: 17(x - 30)

x in the equation is the speed of the driver and the negative sign in the equation shows that the driver was traveling at a total speed greater than the posted speed limit (thus, x - 30 is the speed above the posted speed limit in which the driver will be fined for)

Since the driver was fined $221, the equation becomes:

17(x - 30) = 221

divide both sides by 17

x - 30 = 221/17

x - 30 = 13

x = 13 + 30

x = 43

The driver was fined for travelling at a speed of 43 miles per hour which is 13 greater than the posted speed limit.

Answer 2

Answer:
43 miles per hour

Explanation:

We know that in Cherokee County, the speed tickets amounts are calculated on the basis of $17 for each mile above the speed limit.
Since Kirk was fined $221, we can easily calculate the excess speed he was caught at by dividing $221 by $17/mile, which gives us 13 miles.

Since he was caught in a zone where the posted speed limit was 30, and that he exceeded it by 13 miles per hour... we know he was going at 43 miles per hour.

I hope this helps you :)