The average distance from Earth to Mars is 2.25 x 10^(8) km, and the distance from Earth to Neptune is 4.3514 x 10^(9) km. How much farther is Neptune from Earth than Mars? Express your answer in scientific notation. Do not round your answer.
(1 point)
_ km
To find out how much farther Neptune is from Earth than Mars, we need to subtract the average distance from Earth to Mars from the distance from Earth to Neptune.
4.3514 x 10^9 km - 2.25 x 10^8 km
Next, we can subtract the two numbers:
4.3514 x 10^9 km - 2.25 x 10^8 km = (4.3514 - 2.25) x 10^9 km
Simplifying the subtraction inside the parentheses:
= 2.1014 x 10^9 km
Therefore, Neptune is 2.1014 x 10^9 km farther from Earth than Mars.