b$-3.$ What is your effective annual return if you cover your short position at this price in three months?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

c$-1.$ Construct equity balance sheets for a stock price of $$80$ per share.

Note: Input all amounts as positive values.

c$-2.$ What is your margin?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.

c$-3.$ What is your effective annual return if you cover your short position at this price in three months?

Note: A negative value should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.