Why was Aristarchus’s model not accepted? Select two options. Aristotle had better data than Aristarchus. Aristarchus was not as famous as Aristotle. Aristotle’s model was more accurate. Aristarchus could not answer some important questions about the model. Aristarchus had fallen out of favor with Alexander the Great.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Frequency is the number of complete oscillations of a wave per second.