$$ f(x) = 3x + 4 \quad g(x) = 2x - 3 $$ $$ \text{Find: } f \circ g(x) $$

Question

UpStudy AI · Accepted Answer

1. First, write the composition:  
   $$
   f \circ g(x) = f(g(x))
   $$

2. Substitute $$g(x)$$ into $$f(x)$$:  
   $$
   f(g(x)) = f(2x - 3)
   $$

3. Since $$f(x) = 3x + 4$$, replace $$x$$ with $$2x - 3$$:  
   $$
   f(2x - 3) = 3(2x - 3) + 4
   $$

4. Distribute and simplify:  
   $$
   3(2x - 3) + 4 = 6x - 9 + 4 = 6x - 5
   $$

5. Thus, the composition $$ f \circ g(x) $$ is:  
   $$
   f \circ g(x) = 6x - 5
   $$
$$ f \circ g(x) = 6x - 5 $$

\[ f(x) = 3x + 4 \quad g(x) = 2x - 3 \] \[ \text{Find: } f \circ g(x) \]