Answer
$7.58$ million dollars
Work Step by Step
The flow of rate of the investment stream can be expressed as: $R(t)=1.8 -0.04 t$ dollars per year million .
We have: $r=0.0475$ and $T=5 \ years$
The future value is equal to: $\int_0^5 1.8 -0.04 t e^{0.0475 (5-t)} \ dt =9.62 $ million dollars
Therefore, the present value is equal to:$\dfrac{\ Future Value}{e^{rT}}=\dfrac{9.62}{e^{(0.0475)(5)}}=7.58$ million dollars