Christa’s $10 deposit in a bank pays 5% interest compounded annually. She notes that at the end of N years the balance of her account will be B = 10 ( 1.05 ) N . About how many years will it take for her initial deposit to double in value?

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?