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ANEK [815]
3 years ago
15

The johnsons pay $9.95 a month plus $.035 per min for local phone service. Last month, they paid $12.75. How many minutes of loc

al calls did they make?
Mathematics
2 answers:
Leona [35]3 years ago
3 0
  • Answer : The Johnson's  used 8 minutes of local calls.  
sergeinik [125]3 years ago
3 0

Answer:

Johnson's made 80 minutes of local calls

Step-by-step explanation:

The Johnson's pay $9.95 a month plus $0.035 per min for local phone service.

i.e. if Johnson's makes a local phone call for m minutes in a month then, monthly payment they have to make equals

$(9.95+0.035m)

Last month, they paid $12.75.

Let they made m minutes of local calls

then, 9.95+0.035m=12.75

0.035m=12.75-9.95

0.035m=2.8

m=2.8/0.035

m=80

Hence, Johnson's made 80 minutes of local calls

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