Math Help - Having trouble with a few Pre-Calc problems

1. Having trouble with a few Pre-Calc problems

I figured for s(d) it is (d^2 + 1)^.5
but then I get stuck on the composition..

2. Re: Having trouble with a few Pre-Calc problems

Ok for the g(t) its = sec(t)

still having trouble with the rest

3. Re: Having trouble with a few Pre-Calc problems

Yes, and to get $f(g(x))= \frac{sec(t)}{5+ sec(t)}$ you must have $f(x)= \frac{x}{5+ x}$. Just replace the "g(x)" with "x".