The inverse of the function f(x) = 4x?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

M. xyz =radians. covert this radian measure to its equivalent measure in degrees.

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?