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Custumers of a phone company can choose between two service plans for long distance calls. The first plan has a $9 monthly fee and charges an aditional $0.13 for each minute pf calls. The second plan has $23 monthly fee and charges an additional $0.09 monthly for each minute of calls. For how many minutes of calls will the costs of the two plans be equal

Respuesta :

The answer is 350.

m= minutes

Plan 1:  9+0.13m
Plan 2:  23+0.09m

9+0.13m = 23+0.09m
-9               -9
0.13m = 14+0.09m
-0.09m        -0.09m
0.04m= 14
14÷0.04= 350
m= 350
xucantstopmex21
9+0.13x
23+0.09x
im not sure if thats how u solve it but i tried my best to help sorry

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