Set up an equation that can be used to solve the problem. solve the equation and answer the question asked. two friends decide to meet in chicago to attend a cubs baseball game. rob travels 224 miles in the same time that carl travels 196 miles. rob's trip uses more interstate highways and he can average 7 mph more than carl. what is rob's average speed? a) 49 mphb) 52 mphc) 56 mphd) 60 mph this is all the information in the question.

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?