The table below gives US. lead emissions. L, into the environment in milions of metric tons for 1970-1992. Let =0 in 1970. 1970 1975 1980 1985 1988 1980 1900 1991 1992 Lead emissions 240 108.6 47.6 18.6 89 8.1 67 53 46 Year (a) Find an exponential model for these data Lead emission, L() = b) Find a fourth-degree polynomial model for these data. Lead emission, L() = (c) Which of these curves gives a better model for the data? A exponential model B. fourth-degree polynomial (d) Estimate the lead emission in 1984 according to the polynomial model in part b).
The table below gives US. lead emissions. L, into the environment in milions of metric tons for 1970-1992. Let =0 in 1970. 1970 1975 1980 1985 1988 1980 1900 1991 1992 Lead emissions 240 108.6 47.6 18.6 89 8.1 67 53 46 Year (a) Find an exponential model for these data Lead emission, L() = b) Find a fourth-degree polynomial model for these data. Lead emission, L() = (c) Which of these curves gives a better model for the data? A exponential model B. fourth-degree polynomial (d) Estimate the lead emission in 1984 according to the polynomial model in part b).
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:| The table below gives U.S. lead emissions, L, into the environment in milions of metric tons for 1970-1992. Let I = 0 in 1970.
1970 1975 1980 1985 1988 1989 1990 1991 1992
Lead emissions 240 108.6 47.6 18.6 8.9 8.1 6.7 5.3 4.6
Yoar
(a) Find an exponential model for these data
Lead emission, L(I) =
(b) Find a fourth-degree polynomial model for these data.
Lead emission, L() =
(c) Which of these curves gives a better model for the data?
A. exponential model
B. fourth-degree polynomial
(d) Estimate the lead emission in 1984 according to the polynomial model in part (b).
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