To convert the expression \( 29.4 \times 10^{-5} \) into scientific notation, we need to adjust the coefficient (which should be between 1 and 10).
- Move the decimal point in 29.4 one place to the left to get 2.94.
- Since we moved the decimal one place to the left, we need to adjust the exponent on the power of 10 by adding 1 to it. Thus, \( -5 + 1 = -4 \).
This gives us:
\[ 2.94 \times 10^{-4} \]
So the correct answer is:
2.94×10−4 (2 point 9 4 times 10 to the negative 4 power)