If the real exchange rate between the U. S. and Argentina is 1, then a. purchasing-power parity holds, and 1 U. S. dollar buys 1 Argentinean bolivar.
b. purchasing-power parity does not hold, but the amount of dollars needed to buy goods in the U. S. is the same as the amount needed to buy enough Argentinean bolivars to buy the same goods in Argentina.
c. purchasing-power parity holds, and the amount of dollars needed to buy goods in the U. S. is the same as the amount needed to buy enough Argentinean bolivars to buy the same goods in Argentina.
d. purchasing-power parity does not hold, but 1 U. S. dollar buys 1 Argentinean bolivar.

Jenny​ walters, who owns a real estate​ agency, bought an old house to use as her business office. she found that the ceiling was poorly insulated and that the heat loss could be cut significantly if six inches of foam insulation were installed. she estimated that with the​ insulation, she could cut the heating bill by​ $80 per month and the​ air-conditioning cost by​ $70 per month. assuming that the summer season is three months​ (june, july, and​ august) of the year and that the winter season is another three months​ (december, january, and​ february) of the​ year, how much can jenny spend on insulation if she expects to keep the property for five​ years? assume that neither heating nor​ air-conditioning would be required during the fall and spring seasons. if she decides to install the​ insulation, it will be done at the beginning of may.​ jenny's interest rate is​ 6% compounded monthly.