Final answer:
The question involves calculating the total cost of a jacket after including sales tax by first finding the sales tax amount, rounding to the nearest penny, and adding it to the original price.
Step-by-step explanation:
The subject is Mathematics, and it pertains to the calculation of the final price of a product after including sales tax. The calculation involves finding the sales tax amount by converting the percent into a decimal, then multiplying by the original price and rounding the result to the nearest penny. For instance, if Emily bought a jacket for $85 and the sales tax is 7.5%, we would calculate the sales tax as follows: $85 × 0.075 = $6.375. After rounding, we find the tax to be $6.38. Therefore, the total cost of the jacket would be the sum of the original price and the sales tax, resulting in $85 + $6.38 = $91.38.