Using the exponential key of a calculator to find an approximation to the nearest thousandth.
-$2.568^{-3.8}$
A) -30.824
B) 0.152
C) 0.028
D) 0.102

Question

Quizplus · Accepted Answer

To solve $2.568^{-3.8}$, you use the exponential function on a calculator. The negative exponent indicates a reciprocal, and the result is a positive number close to 0, making C) 0.028 the correct approximation to the nearest thousandth. Negative results (like A) are not possible with positive bases and real exponents.

Using the Exponential Key of a Calculator to Find an Approximation