An office manager is taking inventory of some of the equipment in the office in order to determine what new equipment should be ordered. according to the diagram, how many machines perform all 3 functions (print, copy and fax)? a) 3 b) 4 c) 5 d) 6

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()

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.