Question 274677
G(x)= log(base5)(2x-7) 
y=log[5](2x-7)
x=log[5](2y-7)
5^x=5^(log[5](2y-7))
5^x=2y-7
2y=5^x-7
y=(5^x-7)/2
G^1(x)=(5^x-7)/2
.
Ed