Mhanifa can you please help me? This is really hard for me :( I will mark 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

100 points, hi, i’m not sure how to get the equation from the graph and table.

Which equation represents the function on the graph?