Use your calculator, $($show magic buttons$).$

If you deposit $$2000$ in a bank, on Jan $1$ st$,2023,$ and it pays $8\%......$

How much will you have in your acct on Jan $1$st$,2024,$ if bank compounds interest annually?

Same question but bank pays interest quarterly?

It is the Jan $1$ st$,2023.$ You need $$3000$ on Jan $1$ st$,2024.$ Your bank compounds interest annually at $10\%.$

How much do you need to deposit today?