## Precalculus: Mathematics for Calculus, 7th Edition

$0.0000000208$
RECALL: To convert a number in scientific notation, $a \times 10^{n}$, to decimal notation, you move the decimal point: (i) $|n|$ places to the left if $n$ is negative; or (ii) $|n$ places to the right if $n$ is positive The given number in scientific notation has $n=-8$. Thus, move the decimal point 8 places to the left to have: $2.08 \times 10^{-8} = 0.0000000208$