scienfitic notation is
(number that is less than 10 but equal to or greater than 1) times 10^n
ok so
remeber
(ab)(ac)=(a)(b)(c)(d)
also
[tex](x^m)(x^n)=x^{m+n}[/tex]
(5*10⁶)(3*10⁵)=
(5)(10⁶)(3)(10⁵)=
(5)(3)(10⁶)(10⁵)=
(15)(10¹¹)
remember that the first number has to be lesss than 10
15=1.5 times 10¹
(1.5)(10¹)(10¹¹)=
(1.5)(10¹²)
the answer is the 2nd option
