Can someone please help me please?

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Define multiplicative inverse. give an example of a number and its multiplicative inverse.