Mathias found the product 4x+8.
as follows.
4x + 8 5 4x + 8 5 12 5 60
-*x+
2 x *x+2ī 'x+2x+2
Which of the following best describes his error?
O He did not multiply the denominators correctly.
O He did not factor the first numerator.
O He did not divide out the 2 from the 4 and the 8.
0 He did not distribute the 5 to the terms in the other numerator.

Ofin . (2,4) (2,1) a. y= 2 b. x= 2 c. x= -2 d. y= 2x

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

If wxyz is a square, which statements must be true?