4. Demand for Beer and Peanuts Byron spends all his income on beer and peanuts. Byron's utility function is U (x, y) = min(4x, 2x + y), where x is his consumption of beer (in cans) and y is his consumption of peanuts (in packets). Byron is consuming 15 cans of beer and 10 packets of peanuts. The price of beer is $10 per can. a. Graph the indifference curve for Byron that passes through the point (15,10). What is the marginal rate of substitution at (15.10)? b. What is the price of peanuts? c. How much is Byron's income? d. Suppose Byron can now afford 10 cans of beer and 30 packets of peanuts, would he choose to do that instead