Concept explainers
Use a calculator to work these exercises. (See Examples 9 and 10.)
Water Pollution High concentrations of zinc ions in water are lethal to rainbow trout. The function
gives the approximate average survival time (in minutes) for trout exposed to x milligrams per liter (mg/L)of zinc ions. Find the survival time (to the nearest minute) for the given concentrations of zinc ions.
110
525
1960
4500
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Mathematics with Applications In the Management, Natural, and Social Sciences (12th Edition)
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