The Mundell-Fleming model takes the world interest rate r* as an exogenous variable. If r* were to increase, a) in a sma

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The Mundell-Fleming model takes the world interest rate r* as an
exogenous variable. If r* were to increase,
a) in a small open economy with flexible exchange rates, what
would happen to aggregate income, the exchange rate, and the trade
balance?
b) in a small open economy with fixed exchange rates, what
would happen to aggregate income, the exchange rate, and the trade
balance?
Briefly explain your answers in a) and b) and illustrate with
appropriate graphs or descriptions.
Answer it asap, thank you