Answer:
$92,000
Step-by-step explanation:
The risk-free interest rate is the rate of return of a hypothetical investment with no risk of financial loss, over a given period of time. The cost of delaying the project will be the estimated 8% increase in cost - any income we can hypothetically make while delaying which is the 4% risk free rate multiplied by the current cost i.e. $2,300,000; therefore
The cost of delaying the project will be (8% - 4%) * $2,300,000 = $92,000