An architect is designing a new windmill with four sails. In his sketch, the sails' center of rotation is the origin, (0,0), and the tip of one of the sails, point S, has coordinates (5,4). He wants to
make another sketch that shows the windmill after the sails have rotated 90° about their center of
rotation. What would be the coordinates of S'?
The coordinates of S' would be___

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

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.