Use a calculator to work these exercises. (See Examples 9 and 10.)
Business The profits for durable-goods industries (in billions of dollars) in the United States are approximated by P(x) = .0991x4 − 2.82x3 + 23.5x2 − 41.8x + 34, where x = 0 corresponds to the year 1990.*
(a) Estimate the profits for the year 2005.
(b) Assuming the trend remains valid, estimate the profits for the year 2014.
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