1. Answer the questions for the following argument.

If my laptop does not work, then I will use my sisters computer.

My laptop works.

I will not use my sisters computer.

1. [5 pts] Define statement variables (e.g., p, q) and formally rewrite the above argument into an argument form

2. [5 pts] Is the above argument form you answered valid or invalid? Why? Do not use a truth table when justifying your answer.