Let f:R→R be defined by f(x)=10x-7. If g=f-1,then g(x)=?
110x-7
110x+7
X+710
X-710
Determine the value of g(x)
We have, f(x)=10x-7 and g=f-1
f-1(x) is calculated by making x as the subject of the equation.
y=10x-7⇒y+7=10x⇒x=y+710∴f-1(x)=x+710g(x)=f-1(x)∴g(x)=x+710
Hence, the correct answer is Option (C).