Answers

2016-06-15T00:23:00+08:00
Area of the Square = Side x Side (sxs)
-> (3x+2)(3x+2)

If youre going to use the Long Method, just substitute x to each options and whichever has the largest value, thats the answer.

A. (4.25)(4.25) = 18.06.. (ANSWER)
B. (3.2)(3.2) = 10.24
C. (3)(3) = 9
D. (2.45)(2.45) = 6.0025 

But the easiest way or the shortcut in finding the answer to this:
Since its 3x+2, just find the largest number in the options, and thats it.

Since 3/4, which is equivalent to 0.75, is the largest value, it will make the largest area of a square.

:)
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2016-06-15T03:16:34+08:00
The easy way is trial and error ! 
Just direct substitution the choices to the given 3x + 2
a.3/4    3(3/4) + 2 = 4.25
b.0.4    3(0.4) + 2 = 2.6
c.1/3    3(1/3) + 2 = 3
d.0.15  3(0.15) + 2 = 2.45
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