Michaela pays her cell phone service provider $49.95 per month for 500 minutes. Any additional minutes used cost 0.15 each. In June, her phone bill is $61.20. How many additional minutes did she use?

Respuesta :

$61.20=$49.95+$0.15M
$11.25=$0.15M
75=M
ANSWER: She used 75 additional minutes.

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