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plexii
Mick would pay $4.06 in sales tax for an item that costs $58.00.

This can be found by working backwards in the problem. By dividing that sales tax paid (2.94) by the dollars before tax (42), you get a percentage that should equal the percentage of the total paid for tax.

2.94 ÷ 42 = 0.07

This means that the sales tax is 7% of the total prior to tax. So we'd then multiply our dollars (58) with the sales tax in decimal form (0.07)

58.00 × 0.07 = 4.06

Hope I could help!
Find Sales Tax Rate:

[tex]\text {Sales Tax Rate} = \dfrac{\text{Sales Tax}}{\text{Original}} \times 100[/tex]

[tex] \text {Sales Tax Rate} = \dfrac{2.94}{42} \times 100 = 7\%[/tex]

Find tax for an item that cost $58:

[tex]\text {Sales Tax Rate} = 7\% \text{ of } \$58 = \dfrac{7}{100} \times 58 = \$4.06[/tex]

Answer: Sales Tax = $4.06

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