QUESTION 3 A cup of coffee is put into a microwave to heat at time t = 0. The graph of the temperature of the coffee, T, as a function of time, t is sketched below. Which of the following is true? TA O The slope of the graph represents the temperature of the coffee at the moment it is put into the microwave O The vertical intercept represents the temperature of the coffee at the moment it is put into the microwave. O The slope of the graph represents the fact that the coffee is cooling down while it is in the microwave. The vertical intercept represents the temperature of the coffee at the moment it is taken out of the microwave. QUESTION 4 Suppose an exponential function goes through the points (0,2) and (2, 18). Which of the following functions fits this model? O y=2*3* O y = 12*3* O v = 4.5x + 3 O y=3*2*