Distances in space are measured in light-years. The distance from Earth to a star is 6.8 × 1013 kilometers. What is the distance, in light-years, from Earth to the star (1 light-year = 9.46 × 1012 kilometers)? (5 points)
2.66 light-years
7.18 light-years
7.74 light-years
9.46 light-years
To find the distance from Earth to the star in light-years, we need to divide the distance in kilometers by the conversion factor 1 light-year = 9.46 × 10^12 kilometers.
Using the information given, the distance from Earth to the star is 6.8 × 10^13 kilometers.
Therefore, the distance in light-years is (6.8 × 10^13 kilometers) / (9.46 × 10^12 kilometers) = 7.18 light-years.
So, the correct answer is 7.18 light-years.