Answer:
The correct option is 3.
Step-by-step explanation:
It is given that the length of a rectangle is represented by the function
\(L(x)=4x\)
The width of that same rectangle is represented by the function
\(W(x)=7x^2-4x+2\)
The area of a rectangle is
\(A=length \times width\)
\(A=L(x) \times W(x)\)
\((L\cdot W)(x)=L(x) \times W(x)\)
\((L\cdot W)(x)=4x\times(7x^2-4x+2)\)
\((L\cdot W)(x)=28x^3-16x^2+8x)\)
Therefore option 3 is correct.
