please help me answer these questions

Part 4. Answer the following questions given the following scenario: Your cousin in Argentina wants to travel to the U.S and he wants to buy some US dollars while in Buenos Aires. He is confused about all the exchange rate prices/quotes at different exchange houses. He asks you a few questions since you took Global Business in college. He sees the following quotes in the different businesses in Buenos Aires: \begin{tabular}{l} \begin{tabular}{l} House "A" quotes for \\ us dollars: \end{tabular} \\ Buy: 109.95 \\ Sell: 110.95 \\ \hline \end{tabular} House " C " quotes for US dollars: Buy: 108.00 Sell: 111.00 His questions are the following: 22. Which exchange house should he go to exchange to US Dollars? 23. Which quote is the best one for exchanging Argentinian pesos to US Dollars? 24. If he wants to buy $400 uSD, how many pesos does he need to exchange? 25. If the Argentinian Peso is expected to depreciate in the future, what would that mean to the quotes for US dollars at the different exchange houses? Would they be higher, lower or the same