If f(x)= 2x + 5, which of these is the inverse of f(x)
Accepted Solution
A:
Answer:D. [tex]f^{-1}(x)=\frac{x-5}{2}[/tex]Step-by-step explanation:The given function is [tex]f(x)=2x+5[/tex]Let [tex]y=2x+5[/tex]Interchange x and y.[tex]x=2y+5[/tex]Solve for y.[tex]x-5=2y[/tex]Divide both sides by 2[tex]\frac{x-5}{2} =y[/tex]Hence [tex]f^{-1}(x)=\frac{x-5}{2}[/tex]