Final answer:
Michael can afford a car with a principal amount of approximately $20,000.
Step-by-step explanation:
To calculate the principal amount that Michael can afford for a car, we can use the formula for the present value of an annuity. The formula is:
Present Value = Payment Amount * ((1 - (1 + Interest Rate)^(-Number of Periods)) / Interest Rate)
In this case, Michael can afford $350 per month for 6 years with a 4% interest rate. Plugging these values into the formula, we get:
Present Value = $350 * ((1 - (1 + 0.04)^(-6)) / 0.04) = $19,877.36
Therefore, Michael can afford a car with a principal amount of approximately $19,877.36, which rounds to $20,000 (option B).