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4 December, 05:04

ChitChat wireless charges $0.30 per minute plus a monthly base fee. In september, Maggie used 120 minutes and her bill was $50. Write and solve an equation to find the cost if Maggie uses 165 minutes in october

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  1. 4 December, 05:21
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    Let $k = the monthly base fee.

    The variable cost is $0.30 per minute.

    Let

    C = total cost in a month

    x = minutes used

    September:

    x = 120 minutes

    C = $50

    Therefore

    k + (0.30) (120) = 50

    k + 36 = 50

    k = $14

    October:

    x = 165 minutes

    The cost is

    C = 14 + (0.3) (165)

    C = $63.5

    Answer: $63.50
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