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4 November, 20:36

You are looking for a new cell phone plan. The first company, cellular-Tastic (f), charges a monthly fee of $35 and $0.11 per minute of use. Dirt-cheap cell (g) charges a monthly fee of $55 and $0.01 per minute of use. How many times would you need to use for the cell phones to cost the same amount.

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  1. 4 November, 20:43
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    200 minutes

    Step-by-step explanation:

    Let x minutes is needed to use for the cell phones to coast the same amount.

    Now, f (x) = 35 + 0.11x ... (1) {As per given conditions}

    and g (x) = 55 + 0.01 x ... (2) {As per given conditions}

    Now, f (x) = g (x)

    so, 35 + 0.11x = 55 + 0.01x

    ⇒ 0.1x = 20

    ⇒ x = 200 minutes.

    Therefore, after using 200 minutes the cost of the call will be the same for both the plans. (Answer)
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