Problema Solution
For her phone service, Heather pays a monthly fee of $20 , and she pays an additional $0.06 per minute of use. The least she has been charged in a month is $99.62 .
What are the possible numbers of minutes she has used her phone in a month? Use m for the number of minutes, and solve your inequality for m .
Answer provided by our tutors
Charges = $20 + 0.06m
Min. bill = $99.62
20 + 0.06m ≥ 99.62
0.06m ≥ 79.62
m ≥ 79.62/0.06
m ≥ 1327 minutes