Three students are analyzing bean seedlings grown for a science experiment. The scatterplot shows the heights of the seedlings and the number of leaves on each plant.
Each student draws a different trendline for the data.
● Kathy draws a line through points A and E.
● Calvin draws a line through points B and D.
● Deanna draws a line through points C and F.
Explain whether or not each student's trend line represents the data.

Kathy:
Calvin:
Deanna:

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

To decrease an amount by 16% what single multiplier would you use

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.