Robert Sampson owns a $140,000 townhouse and still has an unpaid mortgage $110,000. In addition to his mortgage, he has the following liabilities: Visa $565 MasterCard 480 Discover card 395 Education loan 920 Personal bank loan 800 Auto loan 4,250 Total $7,410 Robert's net worth (not including his home) is about $21,000. This equity is in mutual funds, an automobile, a coin collection, furniture, and other personal property. What is Robert's debt-to-equity ratio? Has he reached the upper limit of debt obligations? Explain