Mathematics, 04.02.2021 21:20 hetdashadia123
13. Amtrak's annual passenger revenue for the years 1990-2010 is modeled approximately by the formula
R=-40|x-11|+990 (there is absolute value)
where R is the annual revenue in millions of dollars and x is the number of years since January 1, 1990. In what years was the passenger revenue $790 million?
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13. Amtrak's annual passenger revenue for the years 1990-2010 is modeled approximately by the formul...
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