Evaluate the polynomial function.
-If $f ( x ) = x ^ { 2 } - 7 x + 9$, find $f ( a + 3 )$.
A) $a ^ { 2 } - 1 a + 21$
B) $a ^ { 2 } - 7 a - 3$
C) $a ^ { 2 } - 1 a - 3$
D) $a ^ { 2 } - 7 a + 6$

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The Answer of Evaluate the polynomial function.
-If $f ( x ) = x ^ { 2 } - 7 x + 9$, find $f ( a + 3 )$.
A) $a ^ { 2 } - 1 a + 21$
B) $a ^ { 2 } - 7 a - 3$
C) $a ^ { 2 } - 1 a - 3$
D) $a ^ { 2 } - 7 a + 6$

Evaluate the Polynomial Function f(x)=x2−7x+9f ( x ) = x ^ { 2 } - 7 x + 9f(x)=x2−7x+9

Evaluate the Polynomial Function $f ( x ) = x ^ { 2 } - 7 x + 9$