Final answer:
The Roth family needs to increase their assets by $21,000 to achieve a net worth of $100,000 after their liabilities increase by $7,000.
Step-by-step explanation:
You asked, "By how much would the Roth family need to increase their assets in order to have a net worth of $100,000, if their total liabilities increase by $7,000 over the next year?"
The Roth family's current assets add up to their liquid assets, use assets, and investment assets, which is $10,000 + $150,000 + $34,000 = $194,000. Their current liabilities are $108,000. Therefore, their current net worth is $194,000 - $108,000 = $86,000. If their liabilities increase by $7,000, their liabilities will be $108,000 + $7,000 = $115,000.
To achieve a net worth of $100,000 with the increased liabilities, the Roth family would need assets totaling $100,000 + $115,000 = $215,000.
Hence, they need to increase their assets by $215,000 - $194,000 = $21,000 to maintain a net worth of $100,000.
The correct answer is c. $21,000.