Question 5 • Math 3
Substitute the depreciation rate r = 0.35 into the equation: 2,000 = 16,000(0.65)^t. Dividing by 16,000 gives 0.125 = (0.65)^t, so t = ln(0.125) ÷ ln(0.65) ≈ 4.83. Rounded to the nearest whole number, Devon’s car is about 5 years old, choice D.
AI-written and checked against the verified answer.