Answer:
D. [tex] 3.77 \times {10}^{7} [/tex]
Step-by-step explanation:
Number of more people living in California than in Maine =
[tex]3.9 \times {10}^{ 7} - 1.3 \times {10}^{6} \\ = 39 \times {10}^{ 6} - 1.3 \times {10}^{6} \\ = 37.7 \times {10}^{6} \\ = 3.77 \times {10}^{7} [/tex]