Question 1: A cake recipe requires 150ml of milk. The milk is added to the cake batter in two stages. During the first 10 seconds, 100 mL of milk is poured into the batter at a steady rate. Then the mixture is beaten for seconds after which the remaining milk is steadily added over another 10 seconds. (a) Draw a graph of the volume of milk added to the cake batter for the 30-second time interval. *