Guys please hwat is it i have a test Which expressions represent the difference of exactly two expressions? Choose 3 answers:
Choose 3 answers:

(Choice A)
A
6(x+7)-26(x+7)−26, left parenthesis, x, plus, 7, right parenthesis, minus, 2

(Choice B)
B
-2j−2jminus, 2, j

(Choice C)
C
4f-2g4f−2g4, f, minus, 2, g

(Choice D)
D
3xyz-103xyz−10

If p(x) is the total value of the production when there are x workers in a plant, then the average productivity of the workforce at the plant is a(x) = p(x) x . (a) find a'(x). a'(x) = xp'(x) − p(x) x a'(x) = xp'(x) − p(x) x2 a'(x) = p'(x) − p(x) x a'(x) = xp'(x) − p'(x) x2 a'(x) = p'(x) − xp(x) x2 why does the company want to hire more workers if a'(x) > 0? a'(x) > 0 ⇒ a(x) is ; that is, the average productivity as the size of the workforce increases. (b) if p'(x) is greater than the average productivity, which of the following must be true? p'(x) − xp(x) > 0 p'(x) − xp(x) < 0 xp'(x) − p'(x) > 0 xp'(x) − p(x) < 0 xp'(x) − p(x) > 0