Answer:
stephen was paid at least $20.00001, and at most $29.
Step-by-step explanation:
we know he had at least $20 to spend, since that's what he spent.
we're given the information that he has at most $9 left. that means originally, he was paid no more than $29.
since kind of given, he has something left, he does have more than $20. which is why I wrote the ".00001" part. but that's a little weird, and it would be acceptable to write stephen was paid at least $20 and at most $29