the extreme rock climbing club planned a climbing expedition. the total cost was $3000, which was to be divided equally among the members going. prior to the trip, 3 members decided not to go. if the cost per person increased by $225, how many people went on the expedition?

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.