Solve by a method of your choice. A medical researcher needs 9 people to test the effectiveness of an experimental drug. If 12 people have volunteered for the test, in how many ways can 9
people be selected?
The 9 people can be selected in ways.

If i have one apple and give you the apple, how many apples do i have?

Write a function rule for the table. hours worked pay 2 $16.00 4 $32.00 6 $48.00 8 $64.00 p = 16h p = 8.00h p = h + 16 h = 8.00p

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.