PLEASE Help Me With PROBLEM NUMBER 3 Please

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

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.