Answer:
The value of the investment at the time of his first deposit is $13,855.
Step-by-step explanation:
The Value of the Investment at the time of his first deposit is its Net Present Value.
Calculation of the Net Present Value of this Investment is as follows ;
Hint : Find the Present Value of individual deposits and sum them up
PV = FV / (1 + r) ^n
Year 0 = $1000 / (1.07)^0
= $1,000
Year 1 = $3000 / (1.07)^1
= $2,804
Year 2 = $5000 / (1.07)^2
= $4,367
Year 2 = $7000 / (1.07)^3
= $5,714
Net Present Value = $1,000 + $2,804 + $4,367 + $5,714
= $13,855