Answer:Step-by-step explanation:o find ((f \circ g)(x)), we need to know the function (g(x)) as well. The notation ((f \circ g)(x)) means (f(g(x))), which involves substituting (g(x)) into (f(x)).Given: [ f(x) = 3x^5 + 2x^3 + 4x ]If you provide the function (g(x)), I can help you find ((f \circ g)(x)). Could you please share (g(x)) with me?