#### Answer

D) 18

#### Work Step by Step

$-x(y-8)^2$
Substitute the given values of x and y.
=$-(-2)(5-8)^2$
The order of operations tells us to solve terms in parenthesis first.
=$-(-2)(-3)^2$
The order of operations tells us to solve exponents next.
=$-(-2)(9)$
Finally work left to right multiplying terms.
Finding the negative of a number is the same as multiplying by -1.
=$(2)(9)$
=$18$