Question

the crowd that heard the president speak was estimated to eb 10000 people. the acyual crowd could be 750 people more or less than this. What are the possible values for the actual crowd size?

Write and solve a compund inequality that rpresent it and graph the solution.

I think the inequality is 10000<x+750<x-750. I don't kno what else to do. Can you help me?
10,000-750 = 9250, the crowd is bigger than or equal to that
10,000+750 = 10750, the crowd is less than or equal to that
so
9250 </= x </= 10750
9250 </= x </= 10750 is the answer?
You can check it. Does it satisfy the problem statement?

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