400 - 25 w greater than or equal to 200

Two lines that do not intersect are skew. always sometimes or never

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?

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)