3.5 Carlos has a utility function that depends on the number of musicals and the number of operas seen each month. His utility function is given by U= x2, where x is the number of movies seen per month and y is the number of operas seen per month. The corresponding marginal utilities are given by: MU: = y2 and MU= 2xy. a) Does Carlos believe that more is better for each good? b) Does Carlos have a diminishing marginal utility for each good?e