Answer:
See screenshot for graph and points - This is <em>not</em> a function because it fails the vertical line test.
Step-by-step explanation:
The vertical line test means that if you can draw a vertical line anywhere on the graph and it hits more than one part of the graph, then it isn't a function.
12 and 28, because
n + (<u><em>2n + 4</em></u>) = 40
<u><em>3n + 4</em></u> = 40
<em><u>3n = 36 n = 12</u></em>
<u><em>12x2 + 4 = 28</em></u>
<u>28</u> is the larger number.
Since it’s a cube all sides are equal