The answer is D. Because all that you do to get a reciprocal is flip the fraction and 1 isn't relevant when it's on the bottom so you drop it and it's just 5.
Answer from: Quest
a. the residual plot for model 1 has a random pattern and is a good fit for the data.
Answer from: Quest
pla·gia·rism
/ˈplājəˌrizəm/
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noun
the practice of taking someone else's work or ideas and passing them off as one's own.