Can someone help me simplify and write in power form and show me step by step how to do it for both problem 8 and 9?

Question 5 spring semester final exam math evaluate

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row