Question

Just need help for some explaining on something.

Answer 1

How do you do this?
You invest $25/ month at a rate of 3.25% APR compounded monthly for 30 years.
You invest $75/ quarter at a rate of 4.00% APR compounded monthly for 30 years.
You invest $1,000 at a rate of 6.25% APR compounded monthly for 30 years.

Answer 2

For all of them, \[A = P(1 + \frac{ APR }{ n })^{yn}\]where "n" is the number of compounding periods within the year. So, for the first question, "n" = 12. And first convert APR to decimal.