The polynomial function [img src=’http://webwork-math.gvsu.edu/webwork2_files/tmp/equations/96/97fb2e89008691c27c41aebb388bd11.png’ align=’ABSMIDDLE’ alt=’f(t)= -2212(t-13)^2+482453’> models the cumulative number of deaths from AIDS in the United States, , where is the number of years after 1990.In 1998, there were deaths.b) When were there the maximum number of deaths from AIDS in the United States?The maximum number of deaths occurred in .c) Sketch a graph of the model. Use the graph to estimate, to the nearest year, when there were approximately 300000 deaths.There were approximately 300000 deaths from AIDS in the United States in the years . Enter the years separated by a comma.d) Find [img src=’http://webwork-math.gvsu.edu/webwork2_files/tmp/equations/7c/58c03bd3557d4cebdfde5bdfd8665f1.png’ align=’ABSMIDDLE’ alt=’f(14)’> and explain its meaning. was .