I'm trying to figure out how to find the answer from a question from course 2 PBL and number 3. Mercedes made this beaded necklace at summer camp.

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?

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Which statement describes surface features called maria on the moon