Dakota wants to beat the record for the most runs batted in in a baseball season. This season, he has 32 runs batted in. If he gets 2 runs batted in at each of the last
13 games, he will miss breaking the record by 3 runs. How many total runs are needed
to break the record? Enter your answer in the box.

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?