Answer:

Step-by-step explanation:
The total number of squares is 36, and only 6 of them are shaded therefore, the remaining 30 are not shaded. The probability that a randomly selected square is not shaded would therefore be:

Collect like terms and you'll get -2 - 3(a - b)
Answer:
(1/2)z
Step-by-step explanation:
I would say the answer is A and E
Because u might need it in the real world.