Which statement describes the association in this scatterplot? A) positive linear association
B) negative nonlinear association
C) negative linear association
D) positive nonlinear association

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?