Answer:
20 solutions
Step-by-step explanation:
Since x is less than or equal to 20, you can write it as x ≤ 20. This means x can be any value as long as it's less than or equal to 20. X can be 19, 18, 17, ..., 1, 0 , -1, etc. Even 20 is included in this list.
However, since the question's asking for positive whole numbers, all negatives (-1, -2, -3, ...) and 0 (neither positive or negative) don't count. Therefore, the only values that satisfy these conditions are 1 ~ 20. From 1 ~ 20, there are 20 numbers, so the answer is 20 solutions.
