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1 January, 17:13

Math: Section 1

Question: 3 of 60

A phone company charges customers a monthly charge using the equation C = 40 + 0.3m, where Cis the monthly

charge, in dollars, and m is the number of minutes ed by the customer. If someone's monthly charge is $46, how

many minutes did the person use that month?

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Answers (1)
  1. 1 January, 17:54
    0
    20 minutes

    Step-by-step explanation:

    The monthly charge (C) of the customer is represented by:

    C = 40 + 0.3m

    where m is the number of minutes used by the customer. We need to find how many minutes did the customer use if the bill is $46. For this we substitute 46 in place of C and find the corresponding value of m.

    So,

    46 = 40 + 0.3m

    46 - 40 = 0.3m

    6 = 0.3m

    6/0.3 = m

    m = 20 minutes

    This means the person used 20 minutes which makes the bill equal to $ 46
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