Use a calculator to work these exercise.
Natural Science 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.
(a) 110
(b) 525
(c) 1960
(d) 4500
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