How many more students were enrolled at the university of michigan in 195019501950 than in 190019001900? express your answer in scientific notation. year approximate enrollment at the university of michigan 185018501850 7.2 \cdot 10^17.2⋅10 1 7, point, 2, dot, 10, start superscript, 1, end superscript 190019001900 3.7 \cdot 10^33.7⋅10 3 3, point, 7, dot, 10, cubed 195019501950 2.7 \cdot 10^42.7⋅10 4 2, point, 7, dot, 10, start superscript, 4, end superscript 200020002000 3.8 \cdot 10^43.8⋅10 4