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

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Answer:

$91.56

Explanation:

We can simplify Nancy's cost expression to ...

c +0.09c = c(1 +0.09) = 1.09c

The the total cost of the item of interest is ...

(1.09)($84) = $91.56