Exhibit 16-7.It is believed that the sales volume of one liter Pepsi bottles depends on the price of the bottle and the price of one liter bottle of Coca Cola.The following data has been collected for a certain sales region. 
Using Excel's regression,the linear model PepsiSales = β0 + β1PepsiPrice + β2ColaPrice + ε and the log-log model ln(PepsiSales)= β0 + β1ln(PepsiPrice)+ β2ln(ColaPrice)+ ε have been estimated as follows: 
Refer to Exhibit 16.7.What is the percentage of variations in ln(PepsiSales)explained by the estimated log-log model?
Definitions:
Net Liquid
Refers to the amount of cash or cash-equivalents a company or individual has after accounting for all liabilities.
Operating Cash Flow
The cash generated from normal business operations, indicating whether a company is able to generate sufficient cash to maintain or expand operations.
Interest Expense
The cost incurred by an entity for borrowed funds, including loans, bonds, or lines of credit.
Net Income
The remaining profit of a company after all financial obligations and taxes are taken out of its total income.
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