Hi I'm not sure which equation to use to solve this. The answer key shows a curve going up to the asymptote so I think exponential decay? Please help thanks!

First Name: Last Name: Student ID: 3. Your instructor and TAs make the questionable decision of having a picnic on a 115 F day in Davis. Initially, the inside of their cooler is 35 F. After 90 minutes, the temperature is 75 F. (a) Plot the temperature inside the cooler versus time for 6 hours. Num- ber your axes at at least four points on the graph. (20 pts) (b) Your instructor worries that the food will be gross if the cooler gets above 105 F. How long (starting from when the cooler is 35.F) do they have before this happens? (10 pts) TT 120 7Sof TL = 35of 90 + 90 min COO 307 t