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Mathematics 28 Online
OpenStudy (anonymous):

Solve the problem. When making a long distance call from a certain pay phone, the first three minutes of a call cost $2.95. After that, each additional minute or portion of a minute of that call costs $0.20. Use an inequality to find the number of minutes one can call long distance for $6.95. A) 23 minutes or fewer B) 35 minutes or fewer C) 20 minutes or fewer D) 2 minutes or fewer

OpenStudy (anonymous):

$6.95 - $2.95 = $4 .2m ≥ 4 -> m ≥ 4/.2 = 20 min

OpenStudy (anonymous):

$6.95 - $2.95 = $4 ( first 3 min) .2m ≤ 4 -> m ≤ 4/.2 = 20 min Thus 3 + less than 20 = ...

OpenStudy (anonymous):

tyvm

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