The table below shows the amount of nuts for a certain number of servings of trail mix. Cups of Nuts

Number of servings

3

9

9

27

Which ratio is equivalent to the ratio of cups of nuts to the number of servings?

6:16
21:63
8:32
21:56

extra i give 15 points
2. In science class, students are learning about organic compounds. An acetic acid molecule is made of 2 carbon atoms, 2 oxygen atoms and 4 hydrogen atoms. What is the ratio of carbon atoms to all atoms?