Write a one-variable inequality to represent each problem.

1. taxi a charges $0.60 per mile and an initial fee of $4. taxi b charges $0.90 per mile and an initial fee of $3. when will the cost of taxi b be greater than taxi a, where m is miles?

2. renting video games from store a costs $4.50 per game plus a monthly fee of $8.50. renting video games from store b costs $6.00 per game with no monthly fee. the monthly cost to rent video games depends on the number of video games, v rented. when will the monthly cost at store a be less than the monthly cost at store b?