The scatter plot shows the amount of sleep Aria got the night before a test and her test scores. Use the y-intercept and the point (6, 80) from the line on the scatter plot. What is the equation of the trend line? Drag numbers to complete the equation. Numbers may be used once, more than once, or not at all.

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

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.

The actual length of side t is 0.045cm. use the scale drawing to find the actual side length of w