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CEMC Gauss (Grade 7), 2020

Algebra Difficulty 1.6 Junior Find the answer Canada

Rosie is saving money. She has $120 in her account today and will begin saving by making $30 deposits into her account. If she makes $m$ such deposits, the expression that best represents the number of dollars in her account is

Pick one

Solution

If Rosie deposits $30 each month for $m$ months, she will save $30m$ dollars.
Rosie has $120 in her account today, and so after $m$ deposits Rosie’s total savings (in dollars) is best represented by the expression $120+30m$ .

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