please help with ALL questions (1-4) using the correct formula please.

Q1: TechNo stock was $25 per share at the end of last year Since then, it paid a $1.50 per share dividend last year. The stock price is currently $23. If you owned 300 shares of TechNo, what was your percent return? (3 points) Q2: The past five monthly returns for K and Company are 3.45 percent, 3.74 percent, -1.70 percent, -2.05 percent, and 8.25 percent. What is the average monthly return? (3 points) Q3: Compute the standard deviation of the past five monthly returns for K and Company are 3.75 percent, 3.92 percent, -1.45 percent, -0.95 percent, and 8.50 percent. (4 points) Q4: At the beginning of the month, you owned $10,000 of Company G, $10,000 of Company S, and $15,000 of Company N. The monthly returns for Company G, Company S, and Company N were 9.25 percent, -1.25 percent, and 9.25 percent What is your portfolio return? (5 Points)