Llamas love pool parties and alfalfa burgers! How many guests have come to Llola's pool party? Is there enough food for everyone? Use bar models to show your answers.

Bar models are like drawing pictures to help you understand math problems. For addition, imagine you want to add 3 and 4. You draw a bar and divide it into two parts: one part is 3 units long, and the other part is 4 units long. When you combine these parts, you can see that the whole bar is 7 units long. For multiplication, think about 3 times 4. You can draw a bar divided into 4 equal parts, each 3 units long. When you count all the parts together, you see that they add up to 12 units, so 3 times 4 is 12. These "bars" help you visualize and solve problems.