Create a scale model to illustrate the equation 5b + 2 = 22. What is the value of b and why? PLEASE HELP ME IT WILL BE GREAT IF U DO

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

If you could answer these your a life saver

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?