The function defined by f(x) = (x + 7)/(2x + 5) Find f(4x) .

Solution:
The question is given below as
[tex]\begin{gathered} f(x)=\frac{x+7}{2x+5} \\ find, \\ f(4x) \end{gathered}[/tex]Concept:
Substitute x with 4x in the function above
[tex]\begin{gathered} f(x)=\frac{x+7}{2x+5} \\ f(4x)=\frac{4x+7}{2(4x)+5} \\ f(4x)=\frac{4x+7}{8x+5} \end{gathered}[/tex]Hence,
The final answer is
[tex]\Rightarrow f(4x)=\frac{4x+7}{8x+5}[/tex]