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

43 miles per hour

Step-by-step 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 :)