I think the answer is 13.5 square units.
You have to multiply 3x3 since it says 3^2 then subtract 9 from 10 you get 1. Then you have to diving 8x and 1 and you get 1/8
% is a number over 100, so 40% is 40/100, which is 0.40.
<span>I have three apples. If you take away two from me, how many do you have? Two</span>