The Federal debt held by the public as a percent of the gross domestic product (GDP) was modeled by the function y 0 000224x 4 0 0206x 3 0 569x 2 5 62x 23 7, where t was the time (in years) since 1980 (a) Find the average public debt, as a percent of GDP, from 1990 to 2000 (b) Find the average publ...

a The average public debt as a percent of G ...

The Federal debt held by the public as a percent of the gross domestic product (GDP) was

Question:

The Federal debt held by the public as a percent of the gross domestic product (GDP) was modeled by the function y = -0.000224x⁴ + 0.0206x³ - 0.569x² + 5.62x + 23.7, where t was the time (in years) since 1980.
(a) Find the average public debt, as a percent of GDP, from 1990 to 2000.
(b) Find the average public debt, as a percent of GDP, from 2000 to 2018.

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