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