Chau can choose Plan A or Plan B for his long distance charges. For each plan, cost (in dollars) depends on minutes used (per month) as shown below. 42 Plan A 39 36 33 Cost (in dollars) >Plan B 21 18 15 12 3- 60 300 360 420 480 540 Minutes used (per month) (a) If Chau makes 450 minutes of long distance calls for the month, which plan costs less? O Plan A O Plan B How much less does it cost than the other plan?

Chau can choose Plan A or Plan B for his long distance charges. For each plan, cost (in dollars) depends on minutes used (per month) as shown below. 42 Plan A 39 36 33 Cost (in dollars) >Plan B 21 18 15 12 3- 60 300 360 420 480 540 Minutes used (per month) (a) If Chau makes 450 minutes of long distance calls for the month, which plan costs less? O Plan A O Plan B How much less does it cost than the other plan?

Calculus: Early Transcendentals

8th Edition

ISBN:9781285741550

Author:James Stewart

Publisher:James Stewart

Chapter1: Functions And Models

Section: Chapter Questions

Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...

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b)For what number of long distance minutes do the two plans cost the same?

If the time spent on long distance calls is less than this amount, which plan costs less?

Plan A

Plan B

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