To calculate the total purchase price of on-sale items with a 6% sales tax, you must
add the original prices and multiply by 6%.
add the sales prices and multiply by 6%.
add the original prices and multiply by 1.06.
add the sales prices and multiply by 1.06.

For this case, the first thing we are going to do is define variables:

x: the sales prices

y: the total purchase price

We know that the percentage of taxes is an additional 6%.

Therefore, the equation that models the problem is:

y = 1.06x

To calculate the total purchase price of on-sale items with a 6% sales tax, you must Add the sales prices and multiply by 1.06

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.