1. The problem statement, all variables and given/known data A forensic specialist took the temperature of a victim's body lying in a street at 2:10 AM and found it to be 85.7° F. At 2:40 AM, the temperature of the body was 84.8° F. When was the murder committed if the air temperature during the night was 55° F? Remember, normal body temperature is 98.6° F. 2. Relevant equations I think I'm supposed to use Newton's Law of Cooling: T = Ts + (To - Ts)e-kt Where T is any temperature Ts is the surrounding temperature To is the original temperature 3. The attempt at a solution I know I should solve for k first, and then substitute it into the original equation to get t, but I'm not sure what to do once I get t. 84.8 = 55 + (85.7 - 84.8)e-k30 because the difference between 2:10 and 2:40 is 30 minutes. (84.8 - 55)/(85.7 - 84.8) = e-k30 ln(2.37984) = lne-k30 ln(2.37984)/30 = -k k = -.116662 Then 85.7 = 55 + (98.6 - 85.7)e.116662*t (85.7 - 55)/(98.6 - 85.7) = e.116662*t ln(2.37984) = lne.116662*t ln(2.37984)/.116662 = t t = 7.43203 But how do I put that into a time format?