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7 July, 13:17

Riley just opened a checking account at the bank. Within the first month, she deposited three checks for $34.98, $51.02, and $51.22. She withdrew $5.23 for new pencils, $10.22 for earbuds, and $7.89 for movies from her account in the same month.

(a) Write Riley's withdrawals as negative rational numbers and her deposits as positive rational numbers.

Answer:

(b) Order the rational numbers from least to greatest and explain your reasoning.

Answer:

(c) At the beginning of the month Riley's balance was $128. What was her balance at the end of the month after all of her deposits and withdrawals? Show your work, no credit will be given for just an answer.

Answer:

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  1. 7 July, 13:38
    0
    (a) Write Riley's withdrawals as negative rational numbers and her deposits as positive rational numbers.

    deposited: + $34.98

    + $51.02

    + $51.22

    withdrew: - $5.23

    - $10.22

    - $7.89

    (b) Order the rational numbers from least to greatest and explain your reasoning.

    Answer: - $10.22, - $7.89, - $5.23, + $34.98, + $51.02, + $51.22

    Negative numbers are always less than positive numbers. The largest negative numbers are the lowest values.

    (c) At the beginning of the month Riley's balance was $128. What was her balance at the end of the month after all of her deposits and withdrawals? Show your work, no credit will be given for just an answer.

    Answer:

    Beginning balance: $128

    Deposited: + $34.98 + $51.02 + $51.22 = + $137.22

    Withdrew: - $5.23 - $10.22 - $7.89 = - $23.34

    Balance:

    $128 + $137.22 - $23.34 = $241.88
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