Navy Flu (Historic) A model for the number of deaths among members of the U.S. Navy...

Navy Flu (Historic) A model for the number of deaths among members of the U.S. Navy in the first 3 months of the 1918 influenza epidemic is graphed below.

a. Use the graph to describe the behavior of N as increasing, decreasing, or constant.

b. Discuss the concavity of N. If there is a change in concavity, give the approximate input value where the concavity changes and tell how the concavity changes at that point.