Hello,
Answer D -3<x<27
Indeed:
1)
if x-12≥0 then x≥12 and
|x-12|=x-12x-12<15 → x<27
so 12≤x<27
2) if x-12<0 then
x<12 and|x-12|=-(x-12)<15
-x+12<15-x<3 → x>-3
So -3<x<12
Thus -3<x<12 U 12≤x<27 ⇔ -3<x<27
Answer: 3 boxes
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For every 8 people called, one signs up. So, for 25 signups you get 25*8=200 called people.
The answer is C. This is because the formula to find the perimeter is Length+length+width+width. So, 1.2 + 1.2 + 0.6 + 0.6 = 3.6
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Step-by-step explanation: Good luck!