The fastest recorded hawaiian lava flow moved at an average speed of 6 mph. the function y equals 6 x describes the distance why the lava moved on average in x ours. graph the function. use the graph to estimate how many miles of lava moved after 4.5 hours.

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.