Heather is going to rent a truck for one day.
There are two companies she can choose from, and they have the following prices.
Company A charges an initial fee of $50 and an additional 40 cents for every mile driven.
Company B has no initial fee but charges 60 cents for every mile driven.
For what mileages will Company A charge more than Company B? Use m for the number of miles driven, and solve your inequality for m .