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The sales tax in your city is $4.4\%$ , and an item costs $3$ before tax. How much tax would you pay on that item? Round to the nearest hundredth or cent.

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Exponential growth and decay: word problems

Full solution

Q. The sales tax in your city is

4.4\%

, and an item costs

3

before tax. How much tax would you pay on that item? Round to the nearest hundredth or cent.

Identify Given Values: Identify the given values. $\newline$ The sales tax rate is $4.4\%$ , and the cost of the item before tax is $\$3$ .
Convert to Decimal: Convert the percentage to a decimal to use in calculations. $\newline$ To convert a percentage to a decimal, divide by $100$ . $\newline$ $4.4\% = \frac{4.4}{100} = 0.044$
Calculate Sales Tax: Calculate the amount of sales tax. Multiply the cost of the item by the sales tax rate (in decimal form). $\text{Tax} = \text{Item Cost} \times \text{Tax Rate}$ $\text{Tax} = \$(3) \times 0.044$
Perform Multiplication: Perform the multiplication to find the tax amount. $\newline$ Tax = $\$3 \times 0.044 = \$0.132$
Round Tax Amount: Round the tax amount to the nearest hundredth or cent. $\$0.132$ rounded to the nearest cent is $\$0.13$ .

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