The graph on the next page, which is based on data from the Actuarial Society of South Afr...

The graph on the next page, which is based on data from the Actuarial Society of South Africa and assumes no changes in current behavior, shows the projected new cases of AIDS in South Africa (in millions) in coming years (x = 0 corresponds to 2000).

(a) Estimate the number of new cases in 2010.

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(b) Estimate the year in which the largest number of new cases will occur. About how many new cases will there be in that year?

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(c) In what years will the number of new cases be below 7,000,000?