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)×(4.3×1011)=0.063×10^11+(4.3 x 10^11)=4.363 x 10^11
b. (6.3×10^9)x(4.3×10^11)=25.929×10^20=2.6 x 10^19
c. (6.3×10^9)×(4.3×10^11)=25.929×10^20=2.6×10^19
d. (6.3×10^9)+(4.3×10^11)=10.33×10^20=1.033×10^19
c. (6.3×10^9)×(4.3×10^11)=25.929×10^20=2.6×10^19
Therefore, the total kilowatt-hours of electricity used during 1902 and 1950 in the US was 2.6 x 10^19.