1. By the definition of O-notation, is it true that the function 3n + 9 is O(n³)? If so, prove that it is true by using the mathematical definition of O-notation. If not, explain in a couple of...

Extracted text: 1. By the definition of O-notation, is it true that the function 3n + 9 is O(n³)? If so, prove that it is true by using the mathematical definition of O-notation. If not, explain in a couple of sentences why it isn't. 2. By the definition of 2-notation, is it true that the function 3n + 9 is Q(n³)? If so, prove that it is true by using the mathematical definition of 2-notation. If not, explain in a couple of sentences why it isn't.