Question 186432
I'll do the first one to get you started.



First, find the inner value {{{g(0)}}}



{{{g(x) = x^2-1}}} Start with the second function.



{{{g(0) = 0^2-1}}} Plug in {{{x=0}}}



{{{g(0) = 0-1}}} Square 0 to get 0



{{{g(0) = -1}}} Subtract



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Now take that result and plug it into f(x):



{{{ f(x) = 5x-4}}} Move onto the first function.



{{{ f(g(0)) = 5(-1)-4}}} Plug in {{{g(0)=-1}}}



{{{ f(g(0)) = -5-4}}} Multiply



{{{ f(g(0)) = -9}}} Subtract



So the answer is {{{ f(g(0)) = -9}}}