Final answer:
The correct setup for the proportion is 112/350 = x/100. After solving the proportion, the percentage of strikeouts per at-bats for Emerson is found to be 32%.
Step-by-step explanation:
The student's question involves calculating the percentage of strikeouts per at-bats for a baseball player, Emerson. Part A asks for the setup of a proportion based on the given information. The correct proportion to represent the percent of strikeouts per at-bats would be 112/350 = x/100, where x represents the percentage we want to find.
In Part B, to find the percent, we solve for x by cross-multiplying to get 350x = 11200. Dividing both sides by 350 gives us x = 11200/350, which simplifies to x = 32. Therefore, the percentage of strikeouts per at-bats is 32%.