Answer:
Add the tax to the subtotal to calculate the total amount
Explanation:
Add the prices of items purchased to obtain a subtotal.
Multiply that subtotal by the tax rate to determine the tax.
Add the tax to the subtotal to calculate the total amount.
__
Example
Purchases total 6.95. The tax rate is 8.2%.
The tax due is ...
0.082 × 6.95 = 0.5699 rounds to 0.57.
The total amount due is ...
6.95 +0.57 = 7.52
_____
Comment on percent
The % (percent symbol) is a fancy shorthand way to write /100. That is, a tax rate of 8.2% means you multiply the pre-tax amount by 8.2/100 = 0.082.
