Brian was billed for 171 minutes.
Step-by-step explanation:
Given,
Monthly fee of phone = $8
Charges per minute = 6 cents = $0.06
Last month bill of phone = $18.26
Let,
x be the minutes billed.
Therefore,
Monthly fee + 0.06*minutes = Total bill
[tex]8+0.06x=18.26\\0.06x=18.26-8\\0.06x=10.26[/tex]
Dividing both sides by 0.06
[tex]\frac{0.06x}{0.06}=\frac{10.26}{0.06}\\x=171[/tex]
Brian was billed for 171 minutes.
Keywords: linear equation, division
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