a. According to the information given in the exercise, the sales tax rate for South Salt Lake is 7.05%
You can write a percent as a Decimal number by dividing it by 100. Then:
Having a $15,700 car in South Salt Lake, you can find the state sales tax as following:
b. To calculate the final cost of the car, including tax, you need to add the state sales tax to $15,700. Therefore, you get this result:
The answers are:
a. State sales tax on the car: $1,106.85
b. Final cost of the car: $16,806.85