Design a class diagram:

Im feeling a bit hungry... lets make a cake called Unified Moist Layer (UML) Cake (aka yellow cake with chocolate frosting). What goes into making such a cake I wonder...:

i. Cake:

1. Butter

2. Sugar

3. Baking powder

4. Salt

5. V anilla extract

6. Egg

7. Flour

8. Milk

ii. Frosting: 1. Confectioners Sugar (a specific type of sugar) 2. Cocoa Powder 3. Butter 4. Evaporated Milk (a specific type of milk) 5. V anilla extract

Create a class diagram to represent a UML Cake. (Hint: every ingredient I listed above, should be a class in your class diagram.

Design a state diagram: HVAC (otherwise known ask heating, ventilation, and air conditioning) systems behave in pretty simplistic ways. Now Im talking about the behavior, not how they actually work internally (not getting into blowers, motors, compressors, etc). When the temperature is ambient (not too hot, not too cold), it remains off. When the temperature falls below the heat threshold, the heat turns on, and turns off again once the temperature rises above the heat threshold. Similarly, when the temperature rises above the cool threshold, the AC turns on, and turns off again once the temperature falls below the cool threshold. Using a state diagram, model this behavior as it has been described. Dont forget to show the initial state.