Final answer:
The sentence 'Six is less than or equal to the sum of a number n and 15' can be written as the inequality 6 <= n + 15. The solution to the inequality is n >= -9.
Step-by-step explanation:
The sentence 'Six is less than or equal to the sum of a number n and 15' can be written as an inequality as follows:
6 ≤ n + 15
To solve this inequality, we can subtract 15 from both sides:
6 - 15 ≤ n
Simplifying, we get:
-9 ≤ n
So the solution to the inequality is:
n ≥ -9