Aphone company offers two monthly charge plans. in plan a, the customer pays a monthly fee of $25 and then an additional 7 cents per minute of use. in plan
b, the customer pays a monthly fee of $29.20 and then an additional 5 cents per minute of use.
for what amounts of monthly phone use will plan a cost less than plan b?
usem for the number of minutes of phone use, and solve your inequality for m.