What is 30,000 expressed in scientific notation? A. 3 x 10 B. 3 x 1000 C. 3 x 10 D. 1 x 10

The correct answer is C. 3 x 10^4.

Here's the step-by-step process:

1. Identify the number you want to convert into scientific notation (in this case, 30,000).
2. Move the decimal point in the number until you have a number between 1 and 10. For 30,000, you move the decimal point 4 places to the left to get 3.
3. The number of places you moved the decimal point becomes the exponent in the scientific notation. Since we moved it 4 places, the exponent is 4.
4. Write the number you got in step 2, then multiply it by 10 raised to the power of the exponent you got in step 3. So, 30,000 in scientific notation is 3 x 10^4.