CGAffineTransform order of operations Swift

Question

I would like to sum up multiple posts because nothing is really clear.

1. myCgRect.applying( CGAffineTransform(A).scaledBy(B) ) does first B and then A ?

2. CGAffineTransform(A).concatenating(CGAffineTransform(B)) does first B then A ?

3. CGAffineTransform(A).scaledBy(...) first scales(B) then A ?

   CGAffineTransform(A).translatedBy(...)first translates(B) then A ?

Is everything correct?

Thank you in advance :D