Respuesta :

1.8×10^n=(6×100,000,000)×(3×1,000,000)
1.8×10^n=600,000,000×3,000,000
1.8×10^n=1,800,000,000,000,000
Divide both sides by 1.8
10^n=1,000,000,000,000,000
There are 15 0's, so n=15

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good job