What is one and one first to answer correctly will be brainliest

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition? a) 6 b) 8 c) 14 d) 20

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Which expression gives you the distance between the points (5,1)and(9,-6)