Let f (x) = x2 – 4 and g(x) = x2 – 1. What is the domain of the function (1) (x)? all real numbers except x = 0
all real numbers
all real numbers except x = -2
all real numbers except x = +1

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.