Posted by WF2022 on .
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $20 onetime activation fee and charges 13 cents a minute. The second plan has no activation fee and charges 17 cents a minute. After how many minutes of long distance calls will the costs of the two plans be equal?

MATH 
PsyDAG,
x = number of minutes
20 + .13x = .17x
Solve for x.
I hope this helps.