Dmitri and Frances are two friends living in Houston who love to try different restaurants in their city, but have specific preferences regarding venues for certain meals. In particular, they like to eat out at upscale gastropubs for dinner and diners for brunch. On the following diagram, the purple curves I1 and I2 represent two of their indifference curves for upscale dinners and diner brunches. Assume that the friends have a monthly budget of $800 available to spend on going out to eat, and further, that the price of a diner brunch is always $10. Each labeled point represents tangency between a budget constraint and the corresponding indifference curve