The amount generated from the investment with simple interest is calculated through the equation,
F = P x (1 + in)
where F is the future amount, P is the present worth, i is the decimal equivalent of the given interest and n is the number of interest period.
From this item it can be identified that,
P = $10,500
i = 0.06
n = 4
Substituting the known values,
F = ($10,500) x (1 + (0.06)(4))
F = $13020
Therefore, after four years, the amount of money that Alex will have is $13,020.
