Mmmmm.....these aren't showing up for me.....
13. Like radicals are radicals that have the same root number and radicand.
Not sure I can help with #14
OK...I see ...there are no "problems" here
RP's answer to the first one is correct !!!
For the second
No.....the inverse of a function is not always a function.......for instance...the inverse of
y = x^2 is f -1(x) = ±√x
This does not pass the vertical line test....so it will not be a function