Answer:
A. 30.
Explanation:
9 x 10^7 = 90,000,000
3 * 10^6 = 3,000,000
Dividing we get 90/3
= 30.
A.30
9 × 10^7 = 90 000 000
3 × 10^6 = 3 000 000
90 000 000 / 3 000 000 = 30
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