The total surface area of a cone of slant height 1cm and base radius rcm is 224πcm, if r:1=2:5 find a. correct to one decimal place, the value of r
b. correct to the nearest whole number, the value of the cone. (take π 22/7​

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.