Which of the following is a proportion?
1. 2/8 = 3/12
2. 2/3 = 4/9
3. 3/5 = 6/15
4. 4/7 = 2/14

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Which function has the same domain as y=2x

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?