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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).

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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| 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).
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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