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anonymous

  • one year ago

Ella purchased a game that was on sale for 12% off. The sales tax in her county is 6%. Let y represent the original price of the game. Write an expression that can be used to determine the final cost of the game. A. y − 0.12y B. 0.06(0.88y) C. 1.06(0.88y) D. y − 0.88y + 0.06y

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  1. anonymous
    • one year ago
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    I think its a. am I correct?

  2. anonymous
    • one year ago
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    no

  3. rhr12
    • one year ago
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    I think its d

  4. anonymous
    • one year ago
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    to decease a number by \(12\%\) multiply it by \(100\%-12\%=88\%=0.88\)

  5. anonymous
    • one year ago
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    to increase a number by \(6\%\) multiply it by \(100\%+6\%=106\%=1.06\)

  6. rhr12
    • one year ago
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    So, is it b?

  7. anonymous
    • one year ago
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    so it is not D either to do both, multiply by \(1.06\times .88\)

  8. anonymous
    • one year ago
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    item C

  9. mathstudent55
    • one year ago
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    @beckyg111 The original cost is y To take off the 12% discount, you can subtract 0.12y from y, so y - 0.12y is the discounted price, but it does not include the tax. Also, y - 0.12y = 0.88y. The the reason why A is not the answer is that it does not include the tax.

  10. mathstudent55
    • one year ago
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    When you add or subtract a percent to a number, you can just add or subtract the percent to 100% and then multiply the percent by the original number. To take 12% off the original price, you can do: 100% - 12% = 88% 88% of y = 0.88y 0.88y represents the original price discounted 12%. Now you need to add 6% tax. You can use the same method: 100% + 6% = 106% 106% of (0.88y) = ?

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