Which is an equation of a direct proportion?

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585