30+x=42 I think because it's has to equal 42 and he already has 30
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Hope this helped :)
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ANS: 1 - D
ANS: 2 - B
ANS: 3 - A
ANS: 4 - D
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The admission for each person costs 27 dollars.
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below.
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f(6) = 0 because (x - 6) ---> (6 - 6) = 0