Question

What is 30,000 expressed in scientific notation?

Answer 1

First count how many zeros 30,000 has it has four. So you need to multiply it by something that has four digits. So B. 3 x 1000. Or expressed in scientific notation.

3 × $10^{4}$

Answer 2

The answer is b. It is the only choice that equals the right answer. You could also write this as 3 * 10^4, which is equivalent to b.