Q1) Vera is the impoverished graduate student who as only $100 a month to  spend on food. She has read in government publication that she can  assure adequate diet by eating only peanut butter and carrots in fixed ratio of 2 pounds of peanut butter to 1 pound of carrots, so she  decides to limit her diet to that regime.
1. If peanut butter costs $4 per      pound and carrots cost $2 per pound, how much can she eat in the      month?
2. Assume peanut butter costs rise      to $5 because of peanut subsidies  introduced by politically sensitive      government. By how much will  Vera have to decrease her food purchases?
3. How much in food stamp aid  would government have to give Vera to compensate for effects of peanut subsidy?
4. Describe why Vera's preferences      are of very special type here. How would you graph them?