Geographers use concentration to determine

a. how objects are arranged in a given space
b. the density of a region or place
c. how ideas spread from one region to another
d. how physical features impact land use
e. how close objects are to one another in a given space

The correct answer to this problem is A: how objects are arranged in a given space.

Yep i just took this test

Horizontal asymptote at  tells us that the original graph has been translated down.since  ,  are positive.  also we can say that the point  has a smaller  -coordinate than  .this means that the  transformed exponential function is increasing as it goes to the right. as it goes from  to , the value of the exponential function increases. it goes from to something bigger, . therefore, as  . the left hand would be the side that approaches the horizontal asymptote.so the answer is d