The function y = 3.5x + 2.8 represents the cost y (in dollars) of a taxi ride of x miles.
1.) You have $75 in your wallet, how far can you travel in a taxi ?
2.) From school to your job is about 5.5 miles how much is it going to cost for you to take a taxi there?

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?