Acellus If P = (-3,5), find the image
of P under the following rotation.
180° counterclockwise about the origin
([?], ])
Enter the number that belongs in
the green box
Enter

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?