The scatterplot shown below represents a typical shape of a cubic regression model y = β0 + β1x + β2x2 + β3x3 + ε. 
Which of the following is a predicted value 
if x is equal to 12?
Definitions:
Wealth
The accumulation of significant monetary assets or tangible properties that are easily transferrable into a usable form for trade or transactions.
Contribute
To give or supply in common with others; providing a portion towards a common end, such as in a project or a pool of resources.
Benefit
An advantage or profit gained from something.
Long-Run Equilibrium
A state in which all aspects of the market, including supply and demand, are balanced over a sustained period.
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