The temperature inside Olivia's freezer t hours after midnight can be modeled by the equation T = 70 - 70e -0.0357 where T is the temperature in degrees Fahrenheit

According to the US Food and Drug Administration, food in your freezer that has partially or completely thawed may be safely refrozen if it

still contains ice crystals or is 40°F or below.

For how many hours will Olivia's freezer maintain a cold enough temperature?

Round your answer to the nearest hour. Show your work