Question 4 of 5:   you are choosing among three apartments. apartment 1 costs $700 per month, and lets you walk to work. apartment 2 costs $600 per month and would let you get to work via the bus. a bus pass costs $40 per month. apartment 3 costs $400 per month but would require a car which you estimate would cost $400 per month. which apartment is the most economical?