If O={1,2,3,5,7,..}, E={2,4,6,8,...} and N={1,2,3,4,}, then verify that; (i), O ∩ (E ∩ N) = (O ∩ E) ∩ N
(II), O ∪ (E ∪ N) = (O ∪ E) ∪ N

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

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4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

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i use my brain for prombles like this maybe you could try it

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