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OpenStudy (anonymous):
15 people volunteer for a park cleanup. the number of volunteers increases by 7 people each month for several months. After how many months will there be 50 volunteers?
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OpenStudy (amistre64):
an=15+7(n-1)
OpenStudy (amistre64):
50 = 15+7n-7 50 = 8+7n 42 = 7n 6=n
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