The <em><u>correct answer</u></em> is:
156,000 ≤ x ≤ 416,000
Explanation:
The amounts they can spend range from 780,000 to 1,040,000. They have already spent 624,000 and have an unknown amount left to spend. This gives us the inequality
780,000 ≤ 624,000 + x ≤ 1,040,000
To solve this, subtract 624,000 from all 3 sides:
780,000-624,000 ≤ 624000+x-624,000 ≤ 1,040,000-624,000
156,000 ≤ x ≤ 416,000
