PLEASE HELP WITH STEPS!!!!!!! ANSWER IN SCIENTIFIC NOTATION I WILL GIVE BRIANLIEST

Answer:
C.) 8.68686 × [tex]10^{7}[/tex]
D.) 4.1688 × [tex]10^{2}[/tex]
Step-by-step explanation:
For C.) you take 8.69 and multiply that by [tex]10^{7}[/tex] and you'll get 86900000
Then you take 3.14 and multiply that by [tex]10^{4}[/tex] and you'll get 31400
So then you take 86900000 and 31400 and subtract it...
86900000 - 31400 = 86868600 and you convert 86868600 to scientific Notation.
Which would equal **** 8.68686 × [tex]10^{7}[/tex] *****
For D.) you take 4.32 and multiply that by [tex]10^{3}[/tex] and You'll get 4320
then you take 9.65 and multiply that by [tex]10^{-2}[/tex] and you'll get 0.0965
So then you take 4320 and 0.0965 and subtract it...
4320 - 0.0965 = 4319.9035 and you convert 4319.9035 to Scientific Notation.
Which would equal **** 4.1688 × [tex]10^{2}[/tex] ****