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A cell phone company charges $55 a month for unlimited text and $0.50 per minute for phone calls. The bill last month was $66. Write an equation to find out how many minutes for phone calls were charged on the bill. (use notes in the Schoology "Notes" folder)

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4 votes

we can write an equation


T=55+0.50m

where T is the total price, 55 the fixed charge, 0.5 the cost per minute and m the minutes used

if the total is 66 we must to replace T=66 and solve m

so


\begin{gathered} 66=55+0.50m \\ 0.50m=66-55 \\ m=(11)/(0.50) \\ \\ m=22 \end{gathered}

were charged 22 minutes on the bill

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