The amounts of food waste generated in a region during two years were 37,500,000 tons and 30,400,000 tons. What was the total food waste generated over these two years in the region, expressed in scientific notation? 1)
67.9 ⋅ 1014 tons
2)
6.79 ⋅ 107 tons
3)
67.9 ⋅ 107 tons
4)
6.79 ⋅ 1014 tons