Answer:
so  he need to invest is $13241
Explanation:
Given data
future value = $1,500,000
time t  = 30 year
rate r = 8%
to find out
How much does he need to invest
solution
for find out principal we will apply here formula that is
future value = principal ( 1+ rate)^(t-1) Â / rate
put here all value of rate time t and future value to get principal
1500000 = principal [tex](1 + .08)^{30-1}[/tex] / 0.08
principal = 1500000 Â / ( [tex](1 + .08)^{30-1}[/tex] / 0.08 )
principal = Â 13241.15
so  he need to invest is $13241