Need asap pllzzz show work if you can.

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?

The graph of a line gets what as the value of the slope gets bigger

Answer this question, only if you know the answer. 30 points and brainliest!