Answer:
B
Step-by-step explanation:
(9.72 × [tex]10^{8}[/tex]) + (1.93 × [tex]10^{7}[/tex])
Take out [tex]10^{7}[/tex] as a common factor
= [tex]10^{7}[/tex](9.72 × 10 + 1.93)
= [tex]10^{7}[/tex](97.2 + 1.93)
= [tex]10^{7}[/tex] × 99.13
= [tex]10^{7}[/tex] × 9.913 × [tex]10^{1}[/tex]
= 9.913 × [tex]10^{8}[/tex] → B
