X^2 - xy + xy - Y^2
=
X^2 - Y^2
The tax is $18.90
(9/100) x 120 = $18.90
hope i helped :)
<span>12 + 2n = 20
2n = 20 - 12
2n = 8
n = 4
Answer D) 4</span>
90, 88, 86. they add up to 264. For me, i just play around with the numbers until i find the right ones, but they all are consecutive even integers.
