Multi-Variable Function Fun!

Algebra Level 3
\(f(x,y) \)\(z \)
\( f(5,3)\)\( 28\)
\(f(12,10) \)\(222 \)
\(f(9,1) \)\( 810\)
\(f(4,2) \)\( 26\)
\( f(8,3) \)\( 511\)
\(f(10,1) \)\( 911\)
\( f(7,3) \)\( 410 \)

What is the formula for this function?

A:

B
C:
D:

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