What is 2 times the difference of 73 and twice the sum of 9 and 4?

I'm not sure about the first one but the second should be 26 seeing as that the sum of 9 and 4 is 13 and twice the sum of 13 is 26

Step-by-step explanation:

answer: the dogs need to shift their focus to human scent.

its because the dogs being trained are for search and rescue thus they need to be able to track humans and their specific scent

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