Complete the table below. Assume f\displaystyle {f} and g\displaystyle {g} are one-to-one functions.

x\displaystyle {x}5111415
f(x)\displaystyle {f{{\left({x}\right)}}}151114
g(x)\displaystyle {g{{\left({x}\right)}}}11145
(fg)(x)\displaystyle {\left({f}\circ{g}\right)}{\left({x}\right)}514
(gf)(x)\displaystyle {\left({g}\circ{f}\right)}{\left({x}\right)}15\displaystyle {15}11\displaystyle {11}