## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

RECALL: In the scientific notation $a \times 10^n$, $1 \le a \lt 10$, and $n$ is an integer. The given expression has $a=18.68$, which does not meet the requirement that $1 \le a \lt 10$. Thus, the given expression is not in scientific notation. The given statement is false.