Question

I C dollars are deposited in an account paying r percent annual interest, the amount after x years is A=C(1=r)^x . Approximate the amount in the account after years, when C=250, r=23%, and x=21 years.
A=$

Answer 1

A=C(1=r)^x
1=r or 1+r?

Answer 2

I think 1 +r

Answer 3

A=250(1+0.23)^21
here the equation can you solve from now?

Answer 4

A=250(1.23)^21
A=250*77.26936447
A=$19.317.34112
round $ 19.317