Macrophages are an important part of the immune system. A macrophage released signaling molecules that bound to receptors on the macrophage’s surface. This interaction activated the microphage further and caused it to produce proteins that regulate immune responses. What type of cell communication was involved in the scenario? Explain your answer

I'm pretty sure illustrators are often represented among the staff of an advertising agency   

Answer moral guide 

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