I am stuck on this problem. An thorough explanation would help lots!​

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?