Question 3 The marginal rate of substitution is C] the slope of the indifference curve. C] constant. C] inversely proportional to the ratio of the prices. C] always equal to the slope of the budget constraint. Question 4 3 points ' Save Answer L Price Quantity Quantity Demanded Supplied $36.00 0 24 $30.00 2 20 $24.00 4 16 $18.00 6 12 $12.00 8 8 $6.00 10 4 $0.00 12 0 Refer to the Table above. Both the demand curve and the supply curve are straight lines. At equilibrium, calculate the consumer surplus. Enter number only. Do not enter letters or symbols