8. The price of a certain item is P dollars. The sales tax on the item is . Which
   expression(s) represent the total cost of the item, in dollars, after the tax has been
   applied? Select each correct answer.
   Plek up to 0 answers.
   A
   (B.)
   (C.
   D.
   (E.

When calculating the total cost of an item after applying a sales tax, you want to multiply the original price by the total percentage that includes both the item’s price and the tax. So for dollars and a 7% tax, you indeed calculate it as 1 plus the tax rate. This leads us to the expressions that correctly represent the total cost.

The valid expressions will be:
: This means you’re taking the original price and adding the 7% tax to it, which is spot on!
: This also represents the same calculation—clever way to show it as a factored expression!

So, if you think about it, you’d pay times the base price, or you can think of the as adding on to the original price. Remember to always consider what constitutes the total when tax comes into play!