I believe the answer either 4 or 6
Im not sure so if its wrong, sorry
P= L+W
P= Perimeter, L= Length and W=Width
Length + Width = Perimeter
So, then P(22) - W(5) = L(17)
Hope that helps.
In standard form the answer will be if you go by (Ax+by=c )then I must say it's 3x-7y=9
D-chloroplast. Chloroplasts are found in plant cells and carry out the process of photosynthesis, they are the equivalent of the “power house of the cell”, the mitochondria