Ed's target during his speed skating practice for 500 meters is 50 seconds. During the first trial, Ed's time was 53 seconds. His coach marked the trial +3. The coach marked the next trial -1. What time did Ed show during the second trial? A. 54 seconds
B. 51 seconds
C. 49 seconds
D. 48 seconds

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.