SOLUTION: You have two options, to buy a cell phone plan or pay as you go. Ignore the cost of the phone, text messages and data plan. Base your choice only on the call minutes you expect to

Question 578758: You have two options, to buy a cell phone plan or pay as you go. Ignore the cost of the phone, text messages and data plan. Base your choice only on the call minutes you expect to consume each month. The plan costs $50 per month calls are free up to 8 hours. Any extra minute for that month will cost you $0.25. Pay as you go has a flat rate of $0.15 per minute. Graph the cost of the two options with the monthly minutes and find the range in which the plan is more convenient.
Answer by dfrazzetto(283) (Show Source): You can put this solution on YOUR website!
The plan:
8hours = 8(60) = 480 minutes
C= cost
C= 50 + .25(m-480)
Pay as you go:
C=.15m
.15m=.25m-70
70 = .1m
m=700
For less than 700 minutes the plan is cheaper, after that, the flat rate is cheaper

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