Tara and her friends order a pizza. tara eats 3 of the 10 slices and pays $4.20 for her share. assuming that tara had paid at least her fair share, write an inequality for how much the pizza could have cost

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?