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16 December, 12:33

9) Christina's phone company charges a $20 service fee plus $0.20 a minute. If Christina's

bill was for no more than $30.60, how many minutes was Christina charged for?

Solve:

Equation:

or

Inequality

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Answers (1)
  1. 16 December, 12:53
    0
    Answer: 53 minutes

    Step by step explanation:

    The statement "no more than" means less than or equal to ...20 per minute can be written as. 20x, x standing for the unknown amount of minutes.

    So you would write is as:

    .20x+20 {less than or equal to sign} 30.60, then you would solve by taking away 20 from each side giving you. 20x{less than it equal to} 10.60 then divide each side by. 20

    Giving you the ending result of:

    X { less than it equal to} 53

    So Christian was charged for 53 minutes and this makes it an inequality.
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