Nolan deposited $2300 into a savings account for which interest is compound weekly at a rate of 2.12%.

How much interest will he earn after 7 years?

p (1+r/n) ^ (r times n)

P is your start amount

R is rate as a decimal 5% would be 0.05

t is time (years)

n is the number of time compounded, weekly would be 52 times a year.

2300 (1 + (0.0212/52)) ^ (52 times 7)

2300 (1.0004076) ^ (364)

The answers is 367.87