Yon buys tickets to a concert for himself and a friend. there is tax of 6% on the price of the tickets and an additional booking fee of $20 for the transaction. write an algebraic expression to represent the price per person. simplify the expression if possible.

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?