Can someone pls help me

If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

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?