Dioxins are a class of long-lived and highly toxic pollutants.The topsoil concentration in parts per million (ppm) are shown in the table below as a function of distance from the dump. 
Create an appropriate model to re-express the concentration (ppm) .Then determine the regression equation and correlation coefficient for the re-expressed data.Round all figures to 4 decimal places.
Definitions:
Sales Mix
The proportion of different products or services that a company sells, representing the combination of sales that impacts overall profitability.
Total Profits
The sum of net income or net earnings of a company after all expenses, including taxes and costs, have been deducted from total revenue.
Contribution Margin Ratio
A financial metric that calculates the proportion of revenue that exceeds total variable costs, thus indicating how much revenue contributes to fixed costs and profits.
Sales Dollars
The total revenue generated from the sale of goods or services before any expenses are deducted.
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