4. ofSideI tile following didgiaill, will Illustrates Grastoll S PICICICIlots for red beans and rice. Gaston has an income of $20. Rice costs $2 per serving. a) Derive Gaston's demand for red beans. Use prices of $2 and $4 in your analysis. Graph your results, and connect the points you plotted to yield Gaston's demand for red beans. b) Suppose that the price of rice increases to $3. Again, derive Gastons demand for red beans using the same prices you used in part (a). 2