"He has a low IQ so he is vulnerable to fraudulent business practices."
- "He has a low IQ so he is vulnerable to fraudulent business practices."
"he has a low IQ" 「彼は知的に少し低い」"he is not very intelligent" も使えます。
"he is vulnerable to ~" 「〜に騙されやすい」
"fraudulent business practices" 「悪質商法」"scams" 「詐欺」も言えます。
He's a little intellectually challenged, so he gets scammed easily.
この場合、次のような言い方ができますよ。
ーHe's a little intellectually challenged, so he gets scammed easily.
「彼は少し知能が低いので、悪徳商法に騙されやすい」
to get scammed easily で「悪徳商法に騙されやすい」と言えます。
ご参考まで!