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Oil PricesAccording to data from the U.S. Energy Information Administration, the price O in real dollars for an imported barrel of crude oil can be approximated by
where x=1 corresponds to the first quarter of 2015, and so forth. Find the price of imported crude oil for the following quarters.
Determine the most recent full quarter where the price was at least $45.
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Mathematics with Applications and Mylab Math with Pearson EText -- Title-Specific Access Card Package
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