I would simplify each equation and then plug in 6 for x.
A.) 
Subtract 2/3x on both sides
Now you plug in 6
-2 = -2
x = 6 is the solution for choice A
Answer:
$23.97 (Rounded to cent)
Step-by-step explanation:
$435.78*5.5%
=$23.97
It is not asking to add on the sales tax, it is simply just asking how much is the sales tax. Thus making $23.97 correct after rounding to nearest cent.
Answer:
1+26.36
Step-by-step explanation:
1+26.36= 27.36
9 is each side because hexagon has 6 sides and 54 total perimeter divided by 6=9
On the left side of the equation we have like terms so: -3.5x + 3.2 = -1.2x + 7.7
Add 3.5 to each side: 3.2 = 2.3x + 7.7
Subtract 7.7 from each side: -4.5 = 2.3x
Divide both sides by 2.3: -1.95652174 = x
Answer: -1.95652174
