1. (b+2)(b+2)=b^2 +4b + 4 (FOIL)
2. FOIL; x^2 + 6x + 9
3. correct
Answer: Choice D) 
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Work Shown:

Explanation:
First I subtracted y/b from both sides. Then I multiplied both sides by 'a' to fully isolate x. You can optionally distribute the 'a' through to each term inside the parenthesis, but your teacher has chosen not to do this.
<span>
1/4 n (-24+8m-100p)
= -24n/4 + 8mn/4 - 100np/4
= -6n + 2mn - 25np
answer
</span>A. -6n + 2mn - 25np
The answer is 3 because if you were to round 2.9 the next whole up from that is 3