1) $(17)^{3.5} \times (17)^{?}=17^{8}$ A) 2.29 B) 2.75 C) 4.25 D) 4.5 Answer: Option DExplanation:Let $(17)^{3.5} \times (17)^{x}=17^{8}$. Then, $(17)^{3.5}+x = (17)^{8}$. $\therefore$ $3.5+x=8$ $\Leftrightarrow x = (8-3.5)$ $\Leftrightarrow x= 4.5$.