MATH SOLVE

3 months ago

Q:
# carlos pays a monthly fee of $12, and he pays an additional $0.05 per minute. The least he has been charged in a month is $85.15. What are the possible # of minutes he has used his phone in a month? Use M for the number of minutes, and solve your inequality for M.

Accepted Solution

A:

Answer:The number of possible minutes M is greater than 1462.4.Step-by-step explanation:The monthly fee of the call charges = $12Cost per minute = $0.05Least amount bill charged to Carlos = $85.15Let us assume the the number of minutes used on the phone = MSo, the cost of M minutes = m (Cost of 1 minute) = M x ( $0.05) = 0.05 MTotal Bill Charges < Fixed Fee + Cost of M minutes⇒$85.15 < $12 + 0.05 Mor, 85.15 < 12 + 0.05 Mor, 0.05 M < 85 .15 - 12 = 73.12⇒ M < 73.12 / 0.05 = 1462.4or M = 1462.4Hence, the number of possible minutes M > 1462.4