The temperature on a certain day as measured at the airport of a city is changing at the rate of 
, where 
is measured in hours, with 
corresponding to 6 a.m.The temperature at 6 a.m.was 
.What was the temperature at 9 a.m.? Please round your answer to whole degrees.
Definitions:
Face Amount
The amount specified on the face of a bond and the amount for which it will sell if the market rate of interest equals the contract rate.
Market Rate
The prevailing interest rate or cost of borrowing expressed as a percentage, available in the financial markets.
Economic Conditions
Refers to the state of a country's economy at a certain time, including factors like inflation, unemployment, and GDP growth.
Straight-Line Method
A depreciation technique that allocates an equal amount of depreciation to each year over the asset's useful life.
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