The following data show the demand for an airline ticket dependent on the price of this ticket. 
For the assumed cubic and log-log regression models,Demand = β0 + β1Price + β2Price2 + β3Price3 + ε and ln(Demand) = β0 + β1ln(Price) + ε,the following regression results are available. 
Which of the following is the percentage of variations in ln(Demand) explained by the log-log regression equation?
Definitions:
Available Information
Refers to data or knowledge that can be accessed by individuals or systems at a given time.
Optimizing Decision
A decision that chooses the alternative giving the absolute best solution to a problem.
Symptoms
Observable signs or indicators of a condition or trend, typically referring to manifestations of an underlying issue or disease.
Wrong Problem
A situation where the issue being addressed is not the actual root cause of the broader challenge faced.
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