Answer:
a. Principal amount = $1,600
rate of interest = 9% compounded annually
Period = 6 years
Future value = P (1+r)^t
= $1,400 (1+0.09)^6
= $1,600 * 1.6771
= $2683.36
b. Principal amount = $1,600
rate of interest = 9% compounded semi annually, semi annual rate of interest = 9*6/12 = 4.5%
Time = 6 years, semiannual period = 6*2 =12
Future value = P (1+r)^t = $1,400 (1+0.045)^12
= $1,600 * 1.6959
= $2713.44
c. Principal amount = $1,600
Rate of interest = 9% compounded monthly, monthly rate of interest = 9/12 = 0.75%
Time = 6 years, monthly period = 6*12 =72
Future value = P (1+r)^t
= $1,600 (1+0.0075)^72
= $1,600 * 1.7125
= $2740
d. Principal amount = $1,400
Rate of interest = 9% compounded continuously
Period = 6 years
Future value = P * e^rt
= $1,600 (2.71828)^(0.09*6)
= $1,600 * 1.7160
= $2745.60