Answer:
The forecast exchange rate in one's year time according to Goldman Sachs is MXN 14.25/USD
Explanation:
The fact that the Mexican Peso will lose 15% of its value to the dollar means that a dollar will command 15% of the current Peso value in a year's time.
Mathematically, MXN 9.5*1.15= MXN14.25 in a year's time.
It also implies that a Mexican with dollars wanting to convert into MXN in a year's time will receive more Peso compared to now.