Sorry in French is pardon
Hello,
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Answer B
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2x²+28x-5=2(x²+2*7x+49)-5-2*48
=2(x+7)²-103
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It is 6.5 days actually. 3.6/0.2= 13. Since it goes by a half of a day, divide the 13 and 0.5. 6.5 should’ve been that students answer.
