Rudy is investing $4,500 into an account with an annual compound interest rate of
4.2% for 5 years. Rudy will not make any
I additional deposits or withdrawals. What
X will be the total balance in the account at
the end of 5 years?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?