2. Estimate the area of the region above the x-axis and under the graph of the function from x = 0 to x =5. 2 3 5 3. Use the 8 rectangles shown to approximate the area of the region below the graph of f(x) = 10-x over the interval [-1, 3]. 3 2 4. Partition the given interval into the indicated number of subintervals. [1, 4]: 6 5. Find the definite integral by computing an area (It may help to look at a graph of the function)