The phone company A Fee and Fee has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per

Question

The phone company A Fee and Fee has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. If a customer uses 110 minutes, the monthly cost will be $59. If the customer uses 600 minutes, the monthly cost will be $157. A) Find an equation in the form y

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Nem 2 days 2021-07-22T14:44:02+00:00 1 Answers 0 views 0

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    2021-07-22T14:45:05+00:00

    Answer:

    y = 0.2x + 37

    Step-by-step explanation:

    A) Find an equation in the form y = mx + b, where x is the number of monthly minutes used and y is the total monthly of the Ringular plan.

    (x, y) = (minutes, cost)

    (110, 59)

    (600, 157)

    slope = m = dy/dx

    dy/dx = change in y/change in x

    m = dy/dx

    m = (157 – 59)/(600-110)

    m = 98/490

    m = 0.2

    a) the linear equation:

    y – 59 = 0.2(x – 110)

    y – 59 = 0.2x – 22

    y = 0.2x – 22 + 59

    y = 0.2x + 37

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