can you help with these questions?

7. Rewrite the statements below in if-then form. a) Catching the 8:05 bus is a sufficient condition for my being on time for work. b) Having two 45 angle is sufficient condition for this triangle to be a right tri- angle. 8. Use the contrapositive to rewrite the the statements below in the if-then form in two ways. a) Being divisible by 3 is necessary condition for this number to be divisible by 9. b) Doing homework regularly is a necessary condition for Jim to pass the course