## Algebra 2 (1st Edition)

$1.5\cdot10^3$
Simplifying using the rules of exponents, we find: $\frac{8.1\cdot10^{12}}{5.4\cdot10^{9}}=\frac{8.1}{5.4}\frac{10^{12}}{10^{9}}=1.5\cdot10^{12-9}=1.5\cdot10^3$