6. Bob and Sue were two students who were having a friendly argument about who had been more consistent in their math quiz grades. Bob had scored: 80, 90, 95,
85 & 70 on his quizzes. While Sue had scored: 70, 75, 90, 100, & 95 on hers.

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.