f(x)=5*the square root of (x+1) +2 x>=-1 determine if the inverse is a function. I dont understand y are they telling me x>=-1? Also I know how to find the inverse but what do I do to each side of the equation to get rid of the square root? ^2? I got the inverse= [x^(2)-1]/25 I dont think this is right. How do u do this question???