70. A cell phone company offers its customers two monthly plans

phone-company
monthly-plans

#1

70. A cell phone company offers its customers two monthly plans. Plan A costs $20 per month + $0.15 for each minute used. Plan B cost $15 per month plus $0.20 for each minute used.
1) What equation can be written to represent the cost of each plan.
2). After how many minutes is the cost same ?

Answer:

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