Answer
A)0.85
B)$25,500
C)15,600
Work Step by Step
A)The decay factor is 0.85 which means the car's value decreases by 15% per year.
---B)Car's value after 1 year:
y=30000(0.85$)^{1}$
y=25,500
The car's value after 1 years is 25,500
C)Car's value after 4 years:
y=30000(0.85$)^{4}$
y=15660.19
The car's value after 4 years is 15,660.19
