Essay
Solve the problem.
-A cellular phone plan had the following schedule of charges:
Basic service, including 100 minutes of calls $20.00 per month
2nd 100 minutes of calls $0.075 per minute
Additional minutes of calls $0.10 per minute
What is the charge for 200 minutes of calls in one month?
What is the charge for 250 minutes of calls in one month?
Construct a function that relates the monthly charge C for x minutes of calls.
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