Aschool counselor surveyed 75 randomly selected students about the language they speak. of the students surveyed, 15 speak more than one language fluently. based on these results ,how many of the 1350 students the school are expected to speak more than one language fluently

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Ihave trouble finding the nth term of a linear sequence

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.