Over a period of 22 hours, the temperature dropped 36 degrees Fahrenheit what was the average change in temperature?

Three coins are flipped. what is the probability that there will be at least two tails?

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?

Which is the scale factor proportion for the enlargement shown?