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.
Chapter6: Exponential And Logarithmic Functions
Section6.8: Fitting Exponential Models To Data
Problem 3TI: Table 6 shows the population, in thousands, of harbor seals in the Wadden Sea over the years 1997 to...
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Transcribed Image Text: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.
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