Evaluate the function f(x)=2x1\displaystyle {f{{\left({x}\right)}}}=-{2}{x}-{1} when x = 6\displaystyle {6}.

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Evaluate the function g(x)=7\displaystyle {g{{\left({x}\right)}}}={7} when x=0.21321.\displaystyle {x}={0.21321}.

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Evaluate the function h(x)=33x\displaystyle {h}{\left({x}\right)}={3}-{3}{x} when x=2.\displaystyle {x}=-{2}.

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