The perimeter of a rectangle is the sum of its sides, which are two widths and two lengths:
Since the length is twice the width, we have , and the formula for the perimeter becomes
So, we have
What is 3/16 as a decimal
2 answers:
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We can use the vertex form of a quadratic, 
, to find that 
. Plugging 
ordered pairs into g(x), we see that a = 1. For example, for 
, 
. Solving for a gives 1.