Answer: a) $6649
b) $7128.6
Step-by-step explanation:
We would apply the formula for determining compound interest which is expressed as
A = P(1 + r/n)^nt
Where
A = total amount in the account at the end of t years
r represents the interest rate.
n represents the periodic interval at which it was compounded.
P represents the principal or initial amount deposited
From the information given,
P = 6000
r = 9% = 9/100 = 0.09
n = 1 because it was compounded once in a year.
a)
t = 1 year
Therefore,
A = 6000(1 + 0.09/1)^1 × 1
A = 6000(1.09)
A = $6649
b) t = 2 years
A = 6000(1.09)^2
A = $7128.6