6. Indifference curves and utility maximization Juanita plays the violin as part of a string trio and advertises booking opportunities using brochures she distributes in bars around the city. Making one grayscale brochure costs $0.02, but adding color increases the cost to $0.10 per brochure. Juanita sets aside a monthly budget of $20.00 for creating brochures. The following graph shows three of Juanita's indifference curves for the number of grayscale and color brochures that she makes. Use the green line (triangle symbol) to plot Juanita's budget constraint. Then, place the black point (plus symbol) on the graph to indicate Juanita's optimal consumption choice given that budget constraint. 1000 A 900 Budget Constraint 800 700 500 Optimum GRAYSCALE BROCHURES 500 400 300 200 100 25 50 100 125 150 175 200 225 250 COLOR BROCHURES At the optimum that you indicated on the graph, Juanita's marginal rate of substitution is equal to in grayscale per brochure in color