Question Create a compound inequality using digits 1-9 (at most once each) that is equivalent to $2 \leq x < 4$. Explain your solution.

Studdy Solution
Defend the answer by explaining that the compound inequality $2 \leq x < 3.9$ satisfies the original condition of $2 \leq x < 4$ because every number that satisfies $2 \leq x < 3.9$ will also satisfy $2 \leq x < 4$. Additionally, we have used each digit from 1 to 9 at most one time each, as required.
The equivalent compound inequality is $2 \leq x < 3.9$.