Which is 6logx + 4log(x+6) written as a single logarithm?
a. logx(x+6)
b. logx^6(x+6)^4
c. 24logx(x+6)^4
d. 24logx(x+6)

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.