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) $f ( a + 8 ) = 12 a + 13$

Question

Quizplus · Accepted Answer

We substitute $x = a + 8$ into the function equation: 
$$f(a+8) = 12(a+8) - 7 = 12a + 96 - 7 = 12a + 89.$$
Therefore, the answer is choice D.

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

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