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For your cellular phone service you pay a monthly service charge of $12.50 plus phone calls. The charge for calls made during peak hours (7 a.m. to 7 p.m.) is $.50 per call and the charge for calls made during off peak hours is $.30 per call. During the month of March you made 14 calls after 7 p.m. and 43 calls during regular business hours. How much is the phone bill for March? A) $19.90 B) $32.40 O C) $36.50 OD) $38.20

Respuesta :

The fixed monthly service charge is $12.50.

For peak hours charge is $0.50 per hour.

For off peak hours charge is $0.30 per hour.

Determine the phone call for 43 calls during pek hours and 14 call during off peak hours.

[tex]\begin{gathered} T=12.50+0.50\cdot43+0.30\cdot14 \\ =12.50+21.5+4.2 \\ =38.20 \end{gathered}[/tex]

Thus, phone bill for march month is $38.20.

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