An auditorium has 100 seats for every 10 rows. each row has the same number of seats. if s represents the number of seats and r represents the number of rows, which equation represents this proportional relationship?

a. s = 10r
b. s=1/2r
c.100s = r
d.100s = 10r

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?