1. The problem asks to write an inequality for the situation where the number of days, $d$, of rain is not 17. 2. The key phrase here is "not 17," which means $d$ can be any number except 17. 3. The inequality symbol for "not equal to" is $\neq$. 4. Therefore, the inequality is: $$d \neq 17$$ 5. This means $d$ can be less than 17 or greater than 17, but it cannot be equal to 17. 6. This inequality correctly represents the situation described.