Pls HELP. A tennis club is formed for boys and girls. In the first year, 3 boys and 4 girls join the club. Each year after, 3 boys and 1 more girl join the club, Let t be the number of years since the club was forred. Find a rule for the function f(t), representing the total number of club members.

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?