The price of a climbing trip to Mount Kilimanjaro includes an initial fee plus a constant fee per meter The table compares the total distance of a trip (in meters) and the price of
the trip (in dollars).
Distance (meters)
Price (dollars)
115.40
80
110
119.30
140
123.20
How far can you climb for $131?
meters

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?