Amagazine sales person earns $250 a week plus a commission of of the total sales. if the total sales for the week were $693, what is the total that the sales person earned?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution

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.