How to solve integrals using substitution.

Draw a scaled copy of the circle using a scale factor of 2

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

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?