A. 6

B.  $\frac{31}{5}$

C. $\frac{32}{5}$

D. $\frac{39}{5}$

A. 6.

B. 32/5

C. 31/5

D. 29/5

A. {10}

B. {9}

C. {1;9}

D. {-1;10}

A. -31/2

B. -25/2

C. 31/2

D. 29/2

A.  $\left[\begin{array}{c}0<a, b<1\\ 0<a<1<b\end{array}\right.$

B.  $\left[\begin{array}{c}0<a, b<1\\ 1<a, b\end{array}\right.$

C.  $\left[\begin{array}{c}0<a, b<1\\ 0<b<1<a\end{array}\right.$

D.  $\left[\begin{array}{c}0<b<1<a\\ 1<a, b\end{array}\right.$

A. a = 100b

B. a = 100 - b

C. a = =100 + b

D.  $a=\frac{100}{b}$

A. 6xy

B.  $x^3{y}^3$

C.  $x^3+y^3$

D. 2x+3y

$\mathbf{A}\mathbf{.} {\log }_{\mathrm{xyz}}\left({\mathrm{y}}^3{\mathrm{z}}^2\right)=\frac{3\mathrm{ab}+2\mathrm{a}}{\mathrm{a}+\mathrm{b}+1}.$

$\mathbf{B}\mathbf{.}\mathbf{ }{\log }_{\mathrm{xyz}}\left({\mathrm{y}}^3{\mathrm{z}}^2\right)=\frac{3\mathrm{ab}+2\mathrm{ab}}{\mathrm{a}+\mathrm{b}+1}.$

$\mathbf{C}\mathbf{.} {\log }_{\mathrm{xyz}}\left({\mathrm{y}}^3{\mathrm{z}}^2\right)=\frac{3\mathrm{ab}+2\mathrm{a}}{\mathrm{ab}+\mathrm{a}+\mathrm{b}}.$

$\mathbf{D}\mathbf{.} {\log }_{\mathrm{xyz}}\left({\mathrm{y}}^3{\mathrm{z}}^2\right)=\frac{3\mathrm{ab}+2\mathrm{b}}{\mathrm{ab}+\mathrm{a}+\mathrm{b}}.$

A. 375/4

B. 45/2

C. 195/2

D.  $14\sqrt{26}$

A. -31/2

B. -25/2

C. 31/2

D. 29/2