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OpenStudy (anonymous):
Tom is buying 3 pens for m dollars and 4 notebooks for n dollars. Write a mathematical expression for the amount he is spending. Question 10 answers 12(m + n) 7(m + n) 12mn 3m + 4n help
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OpenStudy (anonymous):
3m+ 4n, 3 pens at m dollars = 3m, and 4 notbooks at n dollars, so thats 3m+4n
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