Solve the following recurrence relations:

1.) x(n) = x(n/9) + 5 for n > 1 and x(1) = 9. solve for n = 9k

2.) x(n) = x(n/3) + 5n for n > 1 and x(1) = 9. solve for n = 3k

Which of the following terms refers to a collection of different types of software that share the goal of infiltrating a computer and making it do something? a- malware b- virus c- spyware d- trojan horse