What is the solution set of the inequality | 8x + 3| < 1 ?

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

What is the inverse of the function f(x) = 2x + 1?

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.