If |OA| = 5 and OA' = 7.5, what is the scale factor, r, of this dilation?

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?

15. if the 8% tax on an item amounts to $0.96, what is the final price (tax included) of the item?

If u answer this u will get good luck for a year