Mathematics, 07.11.2019 21:31 andregijoe41

Sara's telephone service costs $21 per month plus twenty five cents for each local call. last month sara's bill was $35.50. write an equation that relates local calls (l) to the bill b(l). use this equation to find out how many local calls sara made

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Sara's telephone service costs $21 per month plus twenty five cents for each local call. last month...