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Sherrie borrowed money from her parents to buy a new phone. The amount she owes them in dollars can be represented by the integer . Sherrie also did some babysitting this month. The amount of money she made in dollars can be represented by the integer . If Sherrie had no other income or expenses, which integer represents her total worth in dollars?

1 Answer

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To find the integer that represents her total worth, add the integers that represent her debt and that of her income:


-88+145

The expression can be rearranged by commutativity as:


145-88

Find the difference:


57

Since this is a positive number, it can be written as:


+57

Hence, the fourth option is the correct answer.

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