Question

Express each number in scientific notation.

18


8,888,800

Answer 1

$scientific\ notation:a\cdot10^n\ where\ a\in[1;\ 10)\ and\ n\in\mathbb{Z}\\==================================\\\\1\underbrace{8}_{\leftarrow1}=1.8\cdot10^{1}\\\\8\underbrace{,888,800}_{\leftarrow6}=8.888800\cdot10^6=8.8888\cdot106$

Answer 2

$1.8\cdot10\\ 8.8888\cdot10^6$