I think that the answer would be A. I hope you forgive me if I am wrong
Answer:
The price of this car=$13,015.925
Explanation:
Given data:
Amount each year=$2,500
Time period=7 years
interest rate=8%
Required:
The price of this car=?
Solution:
The Formula we are going to use is:

Where:
PV is the price of car i.e present value
A is the payment made each year
n is the time period in which payments are paid
r is the interest rate
A=$2,500, r=8%=0.08, n=7

The price of this car=$13,015.925
Answer: b - high wages might be profitable because they raise the efficiency of a firm’s workers
Explanation:
The efficiency wage theory suggests that increasing wages increases labour productivity which can increase profitability of the firm.
High wages increases the retention rate of labour and their productivity.