what is the solution to 4 times 10 to the 3rd power times 3 times 10 to the 4th power written in scientific notation

Answer 1

I read that as :
(4*10^3)(3*10^4)

= 12*10^7
= 1.2 * 10^8

Answer 2

Very helpful

Answer 3

ummmm thats not a answer choice