Answer:
28w < 600 --300
Explanation:
Manuel has $600, and his goal is to keep at least $300 in the account, so he will be able to spend up to the difference ($300) by withdrawing $28 each week. How many weeks can he withdraw (w) ? It can be equal to or less than $300. This is represented in the following inequality:
$28w < $600 -- $300