Another 1way that you may corne up with the best alternative is to use a method economists call marginal analysis. To an economist the alumina! unit is the unit of change, or emu unit. So, in this case one more hour of study is the marginal unit of studying, and the score that one hour of study generates in the rnaIginal score. For example, the sixth hour of studying moves your score from 33 to El for a marginal increase in your score of 8. Complete the tables below. Economics Mathematics Marginal Marginal Hours Scores Increase Hours Scores Increase D D i] i] 1 2E 25 1 24 24 2 43 22 2 44 2t] 3 El 3 E2 _ 4 23 :1 25 _ 5 E3 5 8-4 _ E 91 E 31 _ 2 El? 2 36 _ 8 III] 3 ml]