Given that $\displaystyle {f{{\left({x}\right)}}}={3}{x}+{1}$ and $\displaystyle {g{{\left({x}\right)}}}={8}-{x}^{{2}}$, calculate
(a) $\displaystyle {f{{\left({g{{\left({0}\right)}}}\right)}}}$= Preview Question 6 Part 1 of 2  
(b) $\displaystyle {g{{\left({f{{\left({0}\right)}}}\right)}}}$= Preview Question 6 Part 2 of 2