Therefore the answer is the first one
Since you can only perform addition and subtraction on variables that have the same variable following them, the correct answer is B. 3 - 2i.
Here's why:
1 + 2 + (3i - 5i) =
3 - 2i
You would have to plug it in ~ 5(3y-7)+2y=33, then you would multiply ~ 15y-35+2y=33, then you would simplify ~ 17y=68, then divide ~ y=4, then plug in y and multiply and simplify ~ x=3(4)-7 -- x=12-7 -- x=5. Answer~X=5 Y=4
Number 2 will have the highest percent in sales