Question

which expression are equivalent to the one below? check all that apply. 3^x

A. 18^x/3

B. 3•3^x-1

C. 3•3^x+1

D. 18^x/6^x

E. x^3

F. (18/6)^x

Answer 1

$B.\ 3\cdot3^{x-1}=3^{1+x-1}=3^x\ \ /\text{used:}\ a^n\cdot a^m=a^{n+m}/\\\\F.\ \left(\dfrac{18}{6}\right)^x=3^x$