LONG DISTANCE For Meg’s long-distance calling plan, the monthly cost C in dollars is given by the linear function C(t) = 6 + 0.05t, where t

Question

LONG DISTANCE For Meg’s long-distance calling plan, the monthly cost C in dollars is given by the linear function C(t) = 6 + 0.05t, where t is the number of minutes talked.

a. What is the total cost of talking 8 hours? of talking 20 hours?
b. What is the effective cost per minute (the total cost divided by the number of minutes talked) of talking 8 hours? of talking 20 hours?

I really need help

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niczorrrr 6 months 2021-08-22T14:38:09+00:00 1 Answers 0 views 0

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    2021-08-22T14:39:58+00:00

    Answer:

    Step-by-step explanation:

    The monthly cost is C(t) = 6 + 0.05t, where t is the number of minutes talked.

    Talking for 8 hours would cost C(t) = 6 + 0.05(8), or $6.40;

    Talking for 20 hours would cost C(20) = 6 + 0.05(20), or $7.00.

    The effective cost per minute in the first case is $6.40/8 min = $0.80/min, and that in the second case is $7.00/20 min = $0.35/min

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