Correlation coefficient is always between -1 and +1. So it cannot be +2.3
The answer is D if you combine like terms
AG=1 => BG=3 => CG=sqrt3 => CD = 2sqrt3 => perimeter = 3*CD= 6sqrt3
<span>The probability that a randomly selected monthly cell phone bill is more than $127 is given by

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1.8 is the square root of 3.24