Final answer:
The evaluation of the expression 2^-3 results in the value of 0.125, as 2^-3 is equivalent to 1/2^3 and 2^3 is 8.
Step-by-step explanation:
The task is to evaluate the expression 2⁻³. In mathematics, when we have a negative exponent, it tells us to take the reciprocal (or inverse) of the base number raised to the absolute value of the exponent. So, 2⁻³ is equivalent to 1/2³. Because 2³ equals 8, taking the reciprocal of 8 gives us 1/8. Therefore, the value of 2⁻³ is 0.125.