Express the answer using scientific notation; retain all nonzero decimal places. (1.9 • 10^4) • (8.4 • 10^5)
(1.9*10^4)*(8.4*10^5)=
(1.9*8.4)*(10^4*10^5)=
15.96*10^9=
1.596*10*10^9=
1.596*10^10
(1.9*8.4)*(10^4*10^5)=
15.96*10^9=
1.596*10*10^9=
1.596*10^10