Can someone help me with this?

For each of the following statements, identify whether the statement is true or false and briey explain your reasoning. 1. Since I have already paid my tuition whether I watch the lecture videos or not and Ron does not charge me a fee for watching each video, the cost of watching each lecture video is effectively zero. 2. \"When I purchase multiple cans of tomato sauce, I am, in essence, purchasing the exact same good each time. Therefore, the marginal value I receive from each additional can of tomato sauce I purchase should also remain exactly the same each time." 3. A decrease in the price of pizza will cause the demand curve for pizza to shift to the right. 4. Suppose that the price of apples is currently $0.50 per apple and one million apples are being purchased at that price every week. Then the Surgeon General of the United States announces that scientic medical research has demonstrated that eating an apple every day will actually reduce your chances of becoming sick. Stating that "an apple a day really does keep the doctor away!" As a result of this announcement, the price of apples increases to $1.00 per apple and three million apples are purchased every week. This example would be evidence that the demand for apples is violating the law of demand