The correct answer is C (-20) let me know if you want to know how I got that answer
2)
is a rhombus (a parallelogram with perpendicular diagonals is a rhombus)
3)
bisects
(diagonals of a rhombus bisect the angles from which they are drawn)
1.
Checking the numbers that are greater than 10 in this set, we have:
11.2 and 12
2.
The numbers in this set that are lesser than or equal 9 are:
0, 4.5, 5 and 9
3.
Solving the inequality, we have:

Three values greater than 7 are:
8, 9, 10
4.
Solving the inequality, we have:

Three values smaller than 5 are:
4, 3, 2
5.
Solving the inequality, we have:

Three values greater than or equal 10 are:
10, 11, 12
The answer is 5 3/5 or in decimal form 5.6
Looks like it should be D since they spent 0.08 on tickets and get 1.92. Then shirts are $55 so we subtract this from the profit.