Also Checking this one

[Lizzie]

The problem:
An estimate of the are under the graph of y=f(x)=16-x² from x=-2 to x=2 using 4 rectangles and right endpoints is:

My answer:
58

 

[stapel]

Without your steps, it's hard to say. Assuming the intervals to be of even widths, so they are [-2, -1], [-1, 0], [0, 1], and [1, 2], and therefore having widths of 1 and heights of 15, 16, 15, and 12, respectively, then, yes, "58" is the approximation.

Eliz.

 

[Lizzie]

Sorry for the lack of information there, but yes, that's exactly what I did. Thanks again Stapel! You're my hero! :wink: