Answer:
10x + 5
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The ratio of overtime minutes to the cost of those minutes is 42 : 14.7
<em><u>Solution:</u></em>
Kayla went over the allotted cell phone minutes this month by 42 minutes
Therefore,
over time minutes = 42 minutes
Her regular bill is $39.95, but this month is was $54.65
Regular bill = $ 39.95
This month bill = $ 54.65
<em><u>Therefore, cost for overtime minute is given by:</u></em>
cost for overtime minute = This month bill - regular bill
cost for overtime minute = $ 54.65 - $ 39.95
cost for overtime minute = 14.7
<em><u>Thus ratio of over time minutes to cost of those minutes is given by:</u></em>
Thus the required ratio is found