Final answer:
The maximum depreciation expense for the machinery purchased by Beth's business is $7,145.
Step-by-step explanation:
The maximum depreciation expense for the machinery purchased by Beth's business can be calculated using the straight-line depreciation method. Since the machinery is a 7-year property, the annual depreciation expense can be calculated by dividing the basis of $50,000 by 7 years. Therefore, the maximum depreciation expense would be $7,142.86 (rounded to $7,145).