The formula 1(x)-13.4 In x-11.6 gives the temperature increase in Fahrenheit in a vehicle when the outside air temperature is anywhere from 72F. to 96F., where "x" is the number of minutes during the first hour. If the temperature outside were 80F. and the interior temperature were 60F., what would the interior temperature be after 6 minutes? Round your answer to the nearest hundredths of a degree, and do not enter the units with your answer.