SOLUTION: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee and charges an additional $0.13 for each minute of c

Question 550032: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee and charges an additional $0.13 for each minute of calls. The second plan has an $8 monthly fee and charges an additional $0.18 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = time of calls in minutes
Let = cost of plan
Let the period of each plan = 1 month
1st plan:

2nd plan:

---------------
Set the costs equal to each other

When call minutes = 280, the cost of the plans are equal
check answer:

and

OK
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