2) A cup of coffe at 85'C is place in a freezer at 0'C. The temperature of the coffee decreases exponentially, so that after 5 minutes it is 30'C. a) what is its temperature after 3 mins? b) Find how long it will take for the temperature to drop to 5'C
an answer will do for a) i can do that.. but a full answer for b) will be appreciated.. think ive got half of it right.. just cant finish it to find a final answer
7d) If log(base10)y = 0.7 +2log(base10)x, express y in terms of x e) If log(base10)y = -0.5 -5log(base10)x, express y in terms of x