This graph shows the function relationship between the number of hours worked and the money earned. Use the information in the graph to determine how much money a person would earn if he or she worked for 15 hours. A) $180 B) $197 C) $155 D) $215

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?