Someone please help I don’t understand this

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?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

When a rectangle is dilated, how do the perimeter and area of the rectangle change?