9514 1404 393
Answer:
C and E
Step-by-step explanation:
The rules of exponents apply:
(a^b)(a^c) = a^(b+c)
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[tex]200(10^x)=20\cdot10^1\cdot10^x=\boxed{20(10^{x+1})}\\\\=2\cdot10^2\cdot10^x=\boxed{2(10^{x+2})}[/tex]
These match the 3rd (C) and last (E) choices.
