Eva received $57,000 in compensation payments from JAZZ Corp. during 2018. Eva incurred $8,000 in business expenses relating to her work for JAZZ Corp. JAZZ did not reimburse Eva for any of these expenses. Eva is single and she deducts a standard deduction of $12,000. Based on these facts answer the following questions: Use Tax Rate Schedule for reference. d. Assume that Eva is considered to be a self-employed contractor. What is her regular tax liability for the year?