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A basic cellular package costs $30/month for 60 minutes of calling with an additional charge of 60.50/minute beyond that time. The cost function C (x) for using z minutes would be If you used 60 minutes or less, i.e. if if r < 60, then C (x) = 30 (the base charge). %3D • If you used more than 60 minutes, i.e. (x – 60) minutes more than the plan came with, you would - pay an additional $0.50 for each of those (x – 60) minutes. Your total bill would be C (x) = 30 + 0.50 (x – 60). %3D If you want to keep your bill at $50 or lower for the month, what is the maximum number of calling minutes you can use? minutes

A basic cellular package costs $30/month for 60 minutes of calling with an additional charge of 60.50/minute beyond that time. The cost function C (x) for using z minutes would be If you used 60 minutes or less, i.e. if if r < 60, then C (x) = 30 (the base charge). %3D • If you used more than 60 minutes, i.e. (x – 60) minutes more than the plan came with, you would - pay an additional $0.50 for each of those (x – 60) minutes. Your total bill would be C (x) = 30 + 0.50 (x – 60). %3D If you want to keep your bill at $50 or lower for the month, what is the maximum number of calling minutes you can use? minutes

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A basic cellular package costs $30/month for 60 minutes of calling with an additional charge of $0.50/minute beyond that time. The cost function C' () for using z minutes would be • If you used 60 minutes or less, i.e. if if x < 60, then C (x) = 30 (the base charge). If you used more than 60 minutes, i.e. (x – 60) minutes more than the plan came with, you would pay an additional $0.50 for each of those (x – 60) minutes. Your total bill would be C (x) = 30 + 0.50 (x – 60). If you want to keep your bill at $50 or lower for the month, what is the maximum number of calling minutes you can use? minutes. The maximum calling minutes you can use is Number Back Question Menu - Next
Transcribed Image Text:A basic cellular package costs $30/month for 60 minutes of calling with an additional charge of $0.50/minute beyond that time. The cost function C' () for using z minutes would be • If you used 60 minutes or less, i.e. if if x < 60, then C (x) = 30 (the base charge). If you used more than 60 minutes, i.e. (x – 60) minutes more than the plan came with, you would pay an additional $0.50 for each of those (x – 60) minutes. Your total bill would be C (x) = 30 + 0.50 (x – 60). If you want to keep your bill at $50 or lower for the month, what is the maximum number of calling minutes you can use? minutes. The maximum calling minutes you can use is Number Back Question Menu - Next
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