Find the unit rate of 6,840 costumers in 45 days

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9