Calculate the value

$16.$ Which of the following is not equal to $-1$ $1$ $\longdiv{7}$ $\left(\dfrac {6} {7}\longdiv{6}$ 
$1\right)$ $\dfrac {1} {1}$ $\left(\dfrac {6} {7}\longdiv{8}\right)^{\dfrac {1} {7}}$ $7$ $2\right)\left(\dfrac {6} {7}^{\dfrac {11} {\longdiv{6}}}$ $3\right)$ $1$ $\left(\dfrac {7} {6}\longdiv{42}$ $-1$ $4\right)\left(\dfrac {6} {7}\longdiv{42}$ 

In the following problem $a,b,$ b,and c represent REAL NUMBERS. 
The derivative of $g\left(x\right)=log _{a}\left(bx\right)+cx^{2}is$ 
$○$ $g^{1}\left(x\right)=\right)dfrac\left(b\right)log _{-}a\left(bx\right)\right)\left(N1n$ $a\right)+2cx1\right)$ 
$○$ $\left(g\left(x\right)=\right)dtracb$ $loga\left(bx\right)+2c\times \right)Nln$ a}\) 
$○$ $g^{'}\left(x\right)=\left(dfraC\left(a\right)log _{-}a\left(bx\right)\right)\left(ln$ $\right)+2c\times 1\right)\right)$ 
$○$ $g^{1}\left(x\right)=\left(dfrac\left(b$ $log _{-}a\left(bx\right)\right)\left(ln$ $a1\right)$ 
$○$ $\left(\left(g^{1}\left(x\right)=b$ $log _{-}a\left(bx\right)+2cx1\right)$ 
$○$ $g\left(x\right)=\left(dfrac\left(b$ $log _{-}a\left(bx\right)\right)\left(1ln$ $a|+2c1\right)$ 

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