I need help I Barley have time help plz

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?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.