We are going to sell harlem sweatshirts to raise money for
a end of course party. the machine to silk­screen the
sweatshirts costs $475. it also costs $13 for each plain
sweatshirt. we are planning to sell our sweatshirts for $28
each. how many harlem sweatshirts must we sell in order
to break even?

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.