Question

in 2013, the revenue of a online discribtion company was opproximately 75 billio n . how is 75 billion resresented in scientific notation

Answer 1

`\text{The scientific notation}\\a\cdot10^k\\1\leq a < 10,\ k\in\mathbb{Z}\\\\1\ bilion=1,000,000,000=10^9\\\\75\ bilions=75,000,000,000=7\underbrace{5000000000}_(\leftarrow10)=7.5000000000\cdot10^(10)\\\\=7.5\cdot10^(10)`