Question

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Answer 1

I got 2(ln2 + ln4 + ln6)

Answer 2

The problem requires FOUR rectangles; your expression has only 3 results inside the parentheses. Overlook something?

Answer 3

What is the width of each rectangle?

Answer 4

You're going from x=2 to x=6, and are to use "right end points" for your intervals.
Since there are four rectangles, there are four right end points.
What are the four x-values?

Answer 5

And what are the corresponding rectangle heights (y values)?