5) y(x) = 12.814^3 x

This appears to be a mathematical expression. Based on the visual information, it seems to represent a function where 'y(x)' is equal to a coefficient (12.814) multiplied by 'x' raised to the power of 3.

In mathematical notation, this would be expressed as:

\[ y(x) = 12.814 x^3 \]

Note: The superscript '3' is interpreted as an exponent applied to 'x'. The dot '⋅' is implied between 12.814 and x³, representing multiplication.

Answer: y(x) = 12.814x³