3. There are 5 routes from station A to station B and 4 routes from station B to C. Answer the questions a. How many different routes are possible from station A to station C?
b. In how many ways can a person travel from A to C and come back from C to A? c. In how many ways can a person travel from A to C and return back to A by using different routes? ​

Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.