The graph below indicates the number of new cases of Chalk Dust Disease (CDD) diagnosed each month in the Mathland. Let T(t) represent the total number of new cases per month, F(t) the number of new cases per year among algebraists, G(t) the number of new cases per year among geometers, and t the number of years since January 1, 1990.Estimate (G + F)(9) and interpret its meaning.

A. 2100; In January, 1999, there were about 2100 new cases of CDD diagnosed among algebraists.
B. 4400; In January, 1999, there were about 4400 new cases of CDD diagnosed.
C. 4400; In January, 1999, there were about 4400 new cases of CDD diagnosed among geometers.
D. 2400; In January, 1999, there were about 2400 new cases of CDD diagnosed among geometers.


Answer: B

Mathematics

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