x+6 is x+6. It's an expression. Not sure what you need help with.
In math terms this means x divided by 3=3 so x so x means 9 so the answer is nine
Box 1: None
Box 2: None
Box 3: A, B, C, E
Box 4: D
Some columns are empty because there cannot be 0 or 1 aute angle in a shape!
I hope this helped! Mark me Brainliest! :) -Raven❤️
