Good Job Hannamcbrayer1 But for me I would separate them like this so they don't get confused. K^5 N^2. Not trying to bash on you in anyway at all just trying to help you.
The area of A'B'C is 6.25 times the area of ABC. Also it wouldnt hurt the report the guy below who's obviously milking points.
Answer:
When you round 490.625 to the nearest tenth its 490.6.
ANSWER
The correct answer is

EXPLANATION
The expression given to us is,

We plug in

. That means we substitute 12 wherever we see x to obtain,

We simplify the parenthesis first to obtain,





Hence the expression evaluates to