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Math

posted by on .

Hi can someone help me with this question. This is on my review. Thanks!

The monthly cost C, in dollars, for
international calls on a certain cellular phone plan is
modeled by the function where x is the
number of minutes used.

(a) What is the cost if you talk on the phone for x=43
minutes?

(b) Suppose that your monthly bill is $44.10. How many
minutes did you use the phone?

(c) Suppose that you budget yourself $80 per month for the
phone. What is the maximum number of minutes that
you can talk?

  • math - incomplete - ,

    no function given.

  • Math - ,

    I would gladly answer your question but you need the function.

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