Answer:
9. B
10. D
Explanation:
a. 5406000000
b. 56040000000
c. 550400000
d. 6503000000
a. 900000
b. 120000
c. 3010000000
d. 19010
#9: B
#10: D
#9 had biggest scientific notaiton
#10 had smallet scientific notaiton and numbeer
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