Free points first person gets brainliest

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?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?