How many squares are in this

I believe the answer 39 it is complicated and difficult to tell, but if you count the four squares inside the two sqaures in the middle and then those two squares themselves and the entire square itself, and how each of the big four squares makes one that takses up a quarter of the space you get 39

b.an increase in a causes b to decrease

rounding to the nearest thousandth would be 452,000