Your placement questionnaire should have placed you and told you what classes you should take for your english and math classes. I am not sure if it id necessary for you to take the placement test if you have done the questionnaire. In my personal opionion, i think taking the placement test would be better for you because you can see how far you can go. For your placement test, https://www.mtsac.edu/assessment/testinfo.html and look at the sample questions. For now focus on the English writing reading and math placement because understanding which english and math classes you will be taking is important. Call up the school and ask how you can make an appointment for the placement test at your earliest convenience.