Which could be the entire interval over which the function, f(x), is positive?
х
-3
-2
- 1
0
1
2
3
f(x)
-2
0
2
2
0
-8
-10
-20
(,1)
(-2,1)
O (-0,0)
O (1.4)

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.