Answer the following questions about the definite integral S *(Vx2 + 2)

1. Use Geogebra to estimate the definite integral using lower sums and 10 rectangles. Then use 100 rectangles.
2. Use Geogebra to estimate the definite integral using upper sums and 10 rectangles. Then, use 100 rectangles.
3. Find the average of the upper and lower with 10 and 100 rectangles.
4. Find the value of the definite integral and see how it compares to the Riemann sums.