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11. Incorrect Scientific notation: 56.7 x 10^5

A. 567x10^4

B. 5.67x10^6

C. 0.567x10^7

D. 5.67x10^5

12. Incorrect scientific notation: 75 x 10^-4

A. 7.5 x10^´-5

B. 7.5x10^´4

C. 7.5x10^-3

D. 7.5 x10^4

13. Incorrect scientific notation:0.994 x 10^7

A. 9.94x10^8

B. 9.94x10^-8

C. 9.94x10^7

D. 9.94x10^6