48 weeks ago, Gabriella invested at 3.9% interest, compounded weekly. Today, her investment is worth $225.50. How much interest has Gabriella's account earned in the past 48 weeks?

Answer 1

P(1+.039/52)^(48) = 225.50
P = 217.59

225.50-217.59 = 7.91 interest

Answer 2

Thanks Steve!!!