Explanation:
Sam has saved $250 from working this summer. He keeps saving at a rate of $20 per week. After how many weeks will he have more than $500. Write an inequality to represent this situation, use w for the number of weeks.
250 + 20w > 500
20w > 250
w > 12.5 and round up to get:
After 13 weeks will he have more than $500.