Find P($100)

How do I solve this?? I also have a question about the ~ as well.
P(~$0)

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

The solution of the system of linear equations is b. (2,-3) because the solution is the poi (point of intersection)