Can someone help me out with this?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?