8. Rainbow trout are made sick and can die from high concentrations of zinc ions in a river or lake. The table below shows the survival time in x minutes for a trout in various concentrations of zinc ions (given in milligrams per liter, mg/L). x (in minutes) y (mg mg/L) .5 4500 1 1960 2 850 3 525 (a) Enter the data in your STAT menu and look at a scatter plot of the data. Sketch a plot of the points at right. (Just show the general shape - no need for numbers.) (b) Find a power regression equation that models the data. Round both a and b values to one decimal place. (c) Use your equation to find the output when x = 4. Interpret the result. d) If the concentration of zinc ions in a river is 3000 mg/L, solve to find the survival time of the trout. Show your work.

8. Rainbow trout are made sick and can die from high concentrations of zinc ions in a river or lake. The table below shows the survival time in x minutes for a trout in various concentrations of zinc ions (given in milligrams per liter, mg/L). x (in minutes) y (mg mg/L) .5 4500 1 1960 2 850 3 525 (a) Enter the data in your STAT menu and look at a scatter plot of the data. Sketch a plot of the points at right. (Just show the general shape - no need for numbers.) (b) Find a power regression equation that models the data. Round both a and b values to one decimal place. (c) Use your equation to find the output when x = 4. Interpret the result. d) If the concentration of zinc ions in a river is 3000 mg/L, solve to find the survival time of the trout. Show your work.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

6th Edition

ISBN:9781337111348

Author:Bruce Crauder, Benny Evans, Alan Noell

Publisher:Bruce Crauder, Benny Evans, Alan Noell

Chapter5: A Survey Of Other Common Functions

Section5.4: Combining And Decomposing Functions

Problem 18E

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