Find and Simplify $f ( a + 8 )$ For the Function

Multiple Choice

Find and simplify $f ( a + 8 )$ for the function $f ( x ) = 12 x - 7$ .

A) $f ( a + 8 ) = 12 a + 48$
B) $f ( a + 8 ) = 89$
C) $f ( a + 8 ) = 12 a + 103$
D) $f ( a + 8 ) = 12 a + 89$
E) $f ( a + 8 ) = 12 a + 13$