A basic cellular package costs $20/month for 60 minutes of calling with an additional charge of $0.20/minute beyond that time. The cost function C (a) for using a minutes would be . If you used 60 minutes or less, i.e. if if a < 60, then C (a) = 20 (the base charge). . If you used more than 60 minutes, i.e. (z - 60) minutes more than the plan came with, you would pay an additional $0.20 for each of those (z - 60) minutes. Your total bill would be C(x)=20+0.20 (z - 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? The maximum calling minutes you can use is Number minutes.
A basic cellular package costs $20/month for 60 minutes of calling with an additional charge of $0.20/minute beyond that time. The cost function C (a) for using a minutes would be . If you used 60 minutes or less, i.e. if if a < 60, then C (a) = 20 (the base charge). . If you used more than 60 minutes, i.e. (z - 60) minutes more than the plan came with, you would pay an additional $0.20 for each of those (z - 60) minutes. Your total bill would be C(x)=20+0.20 (z - 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? The maximum calling minutes you can use is Number minutes.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Transcribed Image Text:A basic cellular package costs $20/month for 60 minutes of calling with an additional charge of
$0.20/minute beyond that time. The cost function C (r) for using a minutes would be
• If you used 60 minutes or less, i.e. if if a < 60, then C (x) = 20 (the base charge).
. If you used more than 60 minutes, i.e. (r - 60) minutes more than the plan came with, you
would pay an additional $0.20 for each of those (z - 60) minutes. Your total bill would be
C(x)=20+0.20 (2- 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?
The maximum calling minutes you can use is Number
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