On the quiz page you will find the "Attempt quiz" button and indications on the number of attempts allowed and the score required to pass the quiz. By pressing "Attempt quiz" and then "Start attempt", you will start the quiz: on the main screen you will have the sequence of questions, on the right a navigation menu that allows you to move through the questions. Each question shows the maximum score available and the number of attempts allowed.
Once you have finished, clicking "Finish attempt" will display a summary of your answer status. As you proceed you will see the quiz review, which shows the final grade (out of 100), the time taken and other information.
If you need to enter a mathematical formula or special symbols, please refer to the teachers' hints, in Week 0 or at the beginning of the exercise.