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The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for Year 1970 1975 1980 1985 1988 1989 1990 1991 1992 Lead emissions 274 114.6 42.8 14 8.3 6.7 6 5 3.9 d an exponential model for these data. emission, L(t) = nd a fourth-degree polynomial model for these data.

The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for Year 1970 1975 1980 1985 1988 1989 1990 1991 1992 Lead emissions 274 114.6 42.8 14 8.3 6.7 6 5 3.9 d an exponential model for these data. emission, L(t) = nd a fourth-degree polynomial model for these data.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for 1970-1992. Let 1= 0 in 1970. 1970 1975 1980 1985 1988 1989 1990 1991 1992 5 3.9 Year Lead emissions 274 114.6 42.8 14 8.3 6.7 6 (a) Find an exponential model for these data. Lead emission, L(1) = (b) Find a fourth-degree polynomial model for these data. Lead emission, L(t) = (c) Which of these curves gives a better model for the data? OA. exponential model OB. fourth-degree polynomial (d) Estimate the lead emission in 1982 according to the polynomial model in part (b).
Transcribed Image Text:The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for 1970-1992. Let 1= 0 in 1970. 1970 1975 1980 1985 1988 1989 1990 1991 1992 5 3.9 Year Lead emissions 274 114.6 42.8 14 8.3 6.7 6 (a) Find an exponential model for these data. Lead emission, L(1) = (b) Find a fourth-degree polynomial model for these data. Lead emission, L(t) = (c) Which of these curves gives a better model for the data? OA. exponential model OB. fourth-degree polynomial (d) Estimate the lead emission in 1982 according to the polynomial model in part (b).
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