PDF chapter test TRY NOW

Answer variants:
129x
312x
1236x
If \(f(x) = 3x + 3\), \(g(x) = 3 - 3x\), \(h(x) = 4x\), then prove that \(f \circ \left(g \circ h\right)\) \(=\) \(\left(f \circ g\right) \circ h\).
 
Answer:
 
\(f \circ g\) \(=\)
 
\(g \circ h\) \(=\)
 
\(f \circ \left(g \circ h\right)\) \(=\) \(\left(f \circ g\right) \circ h\) \(=\)