Question

Nancy lives in a state where sales tax is 9%. This means you can find the total cost of an item, including tax, by using the expression c + 0.09c, where c is the pre-tax price of the item.

Use the expression to find the total cost of an item that has a pre-tax price of $84.00.

Answer 1

Answer is $91.56
c + 0.09c
84 + 0.09(84) 0.09x84= 7.56
84 + 7.56 = $91.56

Answer 2

91.56

Explanation:

84 x 0.09=7.56

7.56+84=91.56