Express Using Positive Exponents $2 ^ { - 3 }$ A) 8
B)

Multiple Choice

Express using positive exponents. Then simplify.
- $2 ^ { - 3 }$

A) 8
B) $\frac { 1 } { 8 }$
C) $\frac { 1 } { 6 }$
D) $- 8$