Question 4 An investor buys 150 shares of Microsoft at $300 per share using a 50% initial margin. The maintenance margin requirement (MMR) is 35%. Calculate the amount that the investor has borrowed from her broker. Please format your answers with commas. For instance, if the answer is one million, write it as 1,000,000. 4 pts T

An investor buys 150 shares of Microsoft at $300 per share using a 50% initial margin. The maintenance margin requirement (MMR) is 35%. Calculate the amount that the investor has borrowed from her broker. Please format your answers with commas. For instance, if the answer is one million, write it as 1,000,000