11. circle all of the examples that are perfect square. (you must circle all correct responses to receive credit)
2
4
0
8
10
12
14
16
18
120

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Which of the following parabolas opens down?

Find two numbers if their sum is 91 and the ratio is 6: 7?