# Mathematics - Other

An economy's consumer price index is described by the function

I(t) = -0.2t^3 + 3r^2 + 100

where t=0 corresponds to 1995. (0 <= t <= 10)

At what rate was the CIP changing in 2000? In 2001? In 2002?

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#### Solution Preview

I(t) = -0.2t?+ 3t?+ 100

Differentiating with respect to t, we get ...

#### Solution Summary

This solution explains how to solve the given consumer mathematics problem.

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