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The table below gives U.S. lead emissions, , into the environment in millions of metric...

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Accounting

The table below gives U.S. lead emissions, , into the environment in millions of metric tons for 1970-1992. Let =0 in 1970. For a and b, please provide the exact functions.

image (1 point) The table below gives U.S. lead emissions, L, into the environment in millions of metric tons for 19701992. Let t=0 in 1970. (a) Find an exponential model for these data. Lead emission, L(t)= (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? A. fourth-degree polynomial B. exponential model (d) Estimate the lead emission in 1981 according to the polynomial model in part (b)

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