* URGENT* help plz plz plz plz plz plz plz I SPENT FOREVER

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?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?