The use of electricity in the US in 1902 was 6.03 * 10 ^ 9 kilowatt-hours.
The use of electricity in the US in 1950 was 4.3 * 10 ^ 11 kilowatt-hours.
How many times more was the electricity used in 1950 than 1902? Express your answer in Scientific Notation.
(2 points)
Subtract coefficients and divide powers: 1.73 * 10 ^ 2
Divide coefficients and subtract powers: 7.13 * 10 ^ 1
Multiply coefficients and add powers: 2.6 * 10 ^ 21
Divide coefficients and subtract powers: 1.4x * 10 ^ 2
Add coefficients and add powers: 10.33 * 10 ^ 20