Find the x- and y-intercepts for the following equation. Graph the equation (on your scratch paper) by plotting the x- and y-intercepts. If an intercept does not exist, or is duplicated, use another point on the line to plot the graph. 5x-3y=15
*at least please explain steps/work :)
Brianlest and thanks!

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.