In london, you can tide on a bus for a fixed price plus a per kilometre rate, that depends on the length of the trip. the per kilometre rate is $12/km. you decide to go on a 5 km trip, and it costs you $70 a) identity:
independent variable:
dependent variable:

b) what is the fixed cost?

c) determine the equation relating cost, C, in dollars, and distance, d, in km.

d) what is the cost of an 18 km trip?

e) how far can you tour with $250?