...i don't get it, please help

1) A, 2) C, 3) C

Step-by-step explanation:

Q1.

Trinomial has three terms2x² + 3x - 4

Q2.

The trinomial is incorrect. It should be x² - 8x - 20.

Then the factors are:

C. (x - 10)(x + 2)

Q3.

Sets

A = {1, 8, 9, 11, 15} and B = {2, 6, 8, 11, 20}

Union is the addition of the the elements into one set:

AUB = {1, 2, 6, 8, 9, 11, 15, 20}

Answer 20 centimeters15+8=2323-3=20so the answer is 20 centimeters

Get 40 cups.u would say since the bowl and cups must be equal it would be 40