Question

The cost of a certain item is P dollars. The sales tax on the item is 7%. Which expressions represent the total cost of the item, in dollars, after the tax has been applied? Select each correct answer.

a) P + 0.07P
b) 1.07P
c) 0.93P
d) P - 0.07P

Answer 1

To calculate the total cost of an item after applying sales tax, you need to add the sales tax amount to the original cost of the item. The correct expressions that represent the total cost of the item after tax are: a) P + 0.07P, and b) 1.07P.

Step-by-step explanation:

To calculate the total cost of an item after applying sales tax, you need to add the sales tax amount to the original cost of the item.

The correct expressions that represent the total cost of the item after tax are:

• a) P + 0.07P
• b) 1.07P

The expression a) P + 0.07P represents the original cost of the item, P, plus 7% of P, which is the amount of sales tax. The expression b) 1.07P represents the original cost of the item plus 7% of the original cost, which gives the total cost after tax.

For example, if the cost of the item is $100, using expression b) 1.07P, the total cost after tax would be $107.