If [[x]] = x^2 + 2x + 4, what is the value of [[5]]?  Choose one:	A) 39	B) 9	C) 15	D) 19	E) 25
These functions questions might look intimidating, but they just test your knowledge about how well you can substitute values   [[x]] = x^2 + 2x + 4   [[5]] = 5^2 + 2*5 + 4 = 39. Option 39
<result>A</result>
If [[x]] = x^2 + 2x + 4, what is the value of [[5]]?