Please refer to the background information below to answer the following three questions. Robinson and Friday are the only people on Despair, a small island. They can both produce grain and meat. Let G denote the quantity of grain, and M denote the quantity of meat. The following equations summarize their production possibility curves (PPCs) per week. Robinson: G = 24 - 8M Friday: G =18 -1M 7. Suppose Despair is a closed economy. If Robinson and Friday would like to jointly consume 5 units of meat per week, they would be able to jointly consume a maximum of [ Answer07 = 37.00 ] units of grain per week. 8. In this closed economy, any admissible terms of trade between Robinson and Friday have to be larger than [ Answer08A = 1.00 ] units of grain per unit of meat and smaller than [ Answer08B = 8.00 ] units of grain per unit of meat. 9. Suppose Despair is now opened up to trade with the rest of the world, and can trade at world terms of trade of 6.5 units of grain per unit of meat. If Robinson and Friday would like to jointly consume 5 units of meat per week, they would be able to jointly consume a maximum of [ Answer09 = 108.50 units of grain per week