The use of electricity in the US in 1902 was 6.03 x 10^9 kilowatt-hours.
The use of electricity in the US in 1950 was 4.3 x 10^11 kilowatt-hours.
What was the total kilowatt-hours of electricity used during these two years?
(2 points)
Responses
A. (6.3×10^9)×(4.3×10^11)=25.929×10^2=2.6×10^1
B. (6.3×10^9)+(4.3×10^11)=0.063×10^11+(4.3×1011)=4.363×10^11
C. (6.3×10^9)+(4.3×10^11)=10.33×10^20=1.033×10^19
D. (6.3×10^9)×(4.3×10^11)=25.929×10^20=2.6×10^19
B. (6.3×10^9) + (4.3×10^11) = 0.063×10^11 + 4.3×10^11 = 4.363×10^11
Therefore, the total kilowatt-hours of electricity used during these two years was 4.363×10^11.