6is 25% of what i need on this problem

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?

F(x)= 4x g(x) =x-1 what is f(x) divided by g(x)

25 ! the line of best fit is h = 5a + 86. predict the height at age 16. show your work.