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August 2, 2015

Homework Help: Math

Posted by Sara on Wednesday, January 23, 2013 at 4:03pm.

This table gives the number of AIDS cases reported in men in Los Angeles from 1983-1989:

Month and Year
of Diagnosis AIDS cases reported in period
Jan-June 83 116
July-Dec 83 154
Jan-June 84 197
July Dec 84 269
Jan-June 85 415
July-Dec 85 503
Jan-June 86 668
July-Dec 86 773
Jan-June 87 952
July-Dec 87 933
Jan-June 88 955
July-Dec 88 943
Jan-June 89 967

Looking at the data, determine for which points an exponential function fits this data, and for which points the growth is not exponential.


Because patterns change in real life, to create a true function to represent these data, you need to piece together two equations, called a piecewise function: you'll need to clearly state the domain for which each equation applies. Find these two equations of best fit either by hand or with a graphing calculator, making sure that you're finding two (or more) separate equations for the different sections of the graph.

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