Answer:
its a friendly greeting or its an acknowlegment of some one
Explanation:
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It modifies broke because least expensive means not a lot to pay so its broke
While the main idea is usually in the first sentence, the next most common placement is in the last sentence of a paragraph. The author gives supporting information first and then makes the point in the last sentence. Here's a paragraph we can use as an example. Try to locate the topic and the main idea.