please answer following questions with step thank you so much.

10) A continuously compounded debt has an interest rate of 5%. The debt is currently $100. a) How much will the debt be in 2.5 years? b) What is the EAR on this debt? 11) A portfolio has the following returns -10%, -4% -1%, 5%, 10%, 11% a) What is the expected return based on this sample? b) What is the sample variance? 12) Over the past 72 months, the worst 10 stock returns were -20%, -18%, -15%, -14%, -13%, -12%, -11%, -9%, -8%, 5% What is the 5% VaR? Question 13 is related to the slide set for chapter 6 13) I hold 30% of my assets in stock A and 70% in stock B. Stock A variance: 12% Stock B variance: 20% Stock A expected return: 6% Stock B expected return: 10% Correlation: .8 a) what is the expected return of my portfolio? b) what is the portfolio variance