The following data show the cooling temperatures of a freshly brewed cup of coffee after it is poured from the brewing pot into a serving cup. The brewing pot temperature is approximately 180º F. 
The output for an exponential model, ln(Temp) = β0 + β1Time + ε, t is below. 
How many minutes must elapse after the brewing in order to cool the coffee to 158°F?
Definitions:
Retained Earnings
The portion of net income that is not distributed to shareholders but instead is reinvested in the business or used to pay off debt.
Net Income
The final profit figure for a company, arrived at by subtracting all operational costs and taxes from its total revenue.
Dividends
Funds distributed by a company to its shareholders, typically from the company's earnings.
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