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Verified Answer :

\(f(x) = -4x + 7\)
\(g(x) = 10x - 6\)

\(f(g(x))\)
\(= f(10x - 6)\)
\(= -4(10x - 6) + 7\)
\(= -40x + 24 + 7\)
\(= 31-40x\)

\(f(g(x))=-4(10x-6)+7\\ f(g(x))=-40x+24+7\\ f(g(x))=-40x+31\)