I'm unsure of how to set up these types of problems.

Here's a couple from my book:

Use the limit process to find the area of the region between the graph of the function and the x-axis over the given interval.

1. y=-2x+3, [0,1]

2. 64-x[sup:1skslo47]3[/sup:1skslo47], [1,4]

Also how do you determine if the left-endpoint or right-endpoint is better to use? Any help is greatly appreciated!

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