Something along the lines of this...
I think the answer is C. 45 units
Reverse the sign of each term you are subtracting and then add as usual. Hope this helps!
The answer for this question I don’t think could be answered by anyone but yourself. To help you figure this out, just simply think about all of the math courses you’ve had previous to your current course and think about which course you did best in.
The height should be around 9.19 or 9.2 if you round it up.
(if you need an explanation as to why i would be happy to help as well!)
