Answer:
Answer is b because scientific notation is a variable between 0-10 to the power of a number depending on how many digits it has.
A number from 1-10 in 238,900 miles is 2.389 so the base variable is 2.389. The decimal got moved from 238900. to the left. It moved 5 places.
It went like this;
1 left: 23890.0
2 left: 2389.00
3 left: 238.900
4 left: 23.8900
5 to the left: 2.38900
So the scientific notation is 2.389^5
