Question

.

Answer 1

Δx = (10-1)/6

Answer 2

Youre finding the area of a bunch of rectangles essentially.

Think:

\[(1)(4)+(3-1)(8)+(4-3)(6)+(6-4)(10)...etc\]

Answer 3

I'm not sure how to do this

Answer 4

Im refering to the integral question, using reimann sums