A telephone plan costs $50 per month plus $0.15 per minute of calls made. Another plan costs $44
per month plus $0.20 per minute of calls made.
After how many minutes of calls made in a month
will the cost be the same for both plans?

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.