1) Calculating that expression:
Let's first multiply the numbers before the power:
2) 3.8 x 9.4 =35.72
[tex]\begin{gathered} (3.8\cdot10^3)\cdot\text{ (9.4 }\cdot10^{-5}) \\ 35.72\cdot10^{-2} \\ 3.572\cdot10^{-3} \\ \end{gathered}[/tex]Then, we need to repeat the base (10) and add the exponents (3 + -5 = -2.
Let's adjust the to the scientific notation form, so let's move the dot to the left one place, so we'll end up with
3.572 x 10^-3
