Phone Charges The monthly cost C, in dollars, for international calls on a certain cellular phone plan

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Phone Charges The monthly cost C, in dollars, for international calls on a certain cellular phone plan is modeled by the function C(x) = 0.38x + 5, where x is the number of minutes used.

(a) What is the cost if you talk on the phone for x = 50 minutes?

(b) Suppose that your monthly bill is $29.32. How many minutes did you use the phone?

(c) Suppose that you budget yourself $60 per month for the phone. What is the maximum number of minutes that you can talk?

(d) What is the implied domain of C if there are 30 days in the month?

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Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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Question Posted: Dec 31, 2018 11:29 AM

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Phone Charges The monthly cost C, in dollars, for international calls on a certain cellular phone plan

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Cx 038x 5 a C50 03850 5 24 b Solve Cx 038x ...View the full answer

Precalculus

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