Robin invested $3,600 into a money market account that pays
interest monthly at a simple interest rate of 1.75% a year. she takes
the interest out as soon as it is posted. how much interest will she
earn in 8 months?

Which of the following equations is of the parabola whose vertex is at (4, 3), axis of symmetry parallel to the y-axis and focus at (4, -3)? a.) y+3=1/24 (x+4)^2 b.)y-3=-1/24 (x-4)^2 c.)x-4=-1/24 (y-3)^2

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

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.