Suppose that a customer orders $350 of groceries. What is the total fee that the app will add to the cost of the groceries? (Include units in your answer. Answers must always include units if they are provided in the question.) Q1.2 Part b) 3 Points Create an equation to express the total fee that the app will add in terms of the cost of the groceries. (Remember to define your variables and use proper notation. Variables that you choose to create must always be defined.) Please select file(s) Select file(s) Save Answer Q1.3 Part c) 3 Points What is an appropriate domain? Justify your response.. Enter your answer here