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Jane has a pre-paid cell phone with...
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Mathematics, 18.02.2021 23:10 jamiehills399
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Jane has a pre-paid cell phone with Ringular. She can't remember the exact costs, but her plan has a
monthly fee and a charge for each minute of calling time. In June she used 190 minutes and the cost
was $121.50. In July she used 510 minutes and the cost was $265.50.
A) Express the monthly cost C as a function of a the number of minutes of calling time she used.
C(2) = 41.7 +0.42% Ρ
B) If Jane used 229 minutes of calling time in August, how much was her bill?
$
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