What are the coefficient in this expression 6a-3 /4+7.5-b/3

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

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.

What is the gcf of 20c^3-5c^4+30c^6