**Answer:**

The area of the rectangle will be:

**Step-by-step explanation:**

Given

- height or length = l = 6x³

We know that Area of the rectangle

A=wl

= (3x³+8x²+x) × (6x³)

Thus, the area of the rectangle will be:

**Answer:**

Graph (6,-5) then graph (3,-3)

**Step-by-step explanation:**

Picture is help

This should be the right answer though. If you go to desmos.com and type in the equations it gives you the answer.

Hope that helps :)