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Problem: Sarah is tracking her expenses for the month. On Monday, she spent $20 more than her budget allowed, and on Tuesday, she spent $20 less than her budget allowed. If her budget for each day is represented as 0, find out how much over or under budget she is after these two days.
Solution:On Monday, she spent 3 times her budget, which is represented as 3 * (-20) dollars.On Tuesday, she spent 5 dollars less than her budget, which is represented as -5 dollars.Now, we can calculate the total difference from her budget over these two days:3(-20) + 5 = -60 + 5 = -55So, Sarah is $55 under budget after these two days.
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