can i please get an explanation of these 2 questions?

Question 9: I invested $600,000 in a cattle ranch and I sold that ranch for $1,800,000 ten years later What was my annual percentage rate return? Question 10: How much can I borrow for the purchase of my first home if I can afford to make monthly payments of $1,000, and the annual interest rate is 4.8 percent on a 30-sca mortgage