3. [6 marks] Andrew started 2022 (new year) with $1200 in his savings account. By the end of the year, he wants to have at least $800 in the account. To cover the costs of food, clothing, and entertainment, he takes out $20 every week. (a) Write an inequality to depict Andrew's situation. Make sure to define your variable. (b) For how many weeks can Andrew withdraw money from his bank account? Give an explanation for your response (c) Draw a number line to represent the solution