Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  Unit 2 Performance Tasks  

  • Question 1 (request help)

    Viktor is a bike tour operator and needs to replace two of his touring bikes. He orders two bikes from the sporting goods store for a total of $2,000 and pays using his credit card. When the bill arrives, he reads the following information:

    Balance: $2000

    Annual interest rate: 14.9%

    Minimum payment due: $40

    Late fee: $10 if payment not received by 3/1/2013

    a. To keep his good credit, Viktor promptly sends in a minimum payment of $40. When the next bill arrives, it looks a lot like the previous bill.

    Balance: $1,984.34

    Annual interest rate: 14.9%

    Minimum payment due: $40

    Late fee: $10 if payment not received by 4/1/2013

    Explain how the credit card company calculated the new balance. Notice that the given interest rate is annual, but the payment is monthly.

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  • Question 1 (request help)

    b. Viktor was upset about the new bill, so he decided to send in $150 for his April payment. The minimum payment on his bill is calculated as 2% of the balance (rounded to the nearest dollar) or $20, whichever is greater. Fill out the details for Viktor’s new bill.

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  • Question 1 (request help)

    c. Viktor’s bank offers a credit card with an introductory annual interest rate of 9.9%. He can transfer his current balance for a fee of $40. After one year, the rate will return to the bank’s normal rate, which is 13.9%. The bank charges a late fee of $15. Give two reasons why Viktor should transfer the balance, and two reasons why he should not

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