What is the answer for this equation? 1+5/67-87

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?