A magnifying glass has a scale factor of x. An enlarged ant is 1.5 inches big. The original ant is .25 inches big how big is there scale factor?

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

Can someone answer this question for me

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?