Determine which is wortl re:

a$)1200$ dollars invested at $9\%$ annual interest rate $($compounded yearly$)$ or

b$)1600$ invested at $7\%$ annual interest $($compounded yearly$)$ after

I$)4$ years? Answer $($choose a or b$)$

II$)24$ years? Answer $($choose a or b$)$

III$)$ When would the two investments have equal value?

Answer

Note: Enter an EXACT answer using a logarithm $($NO DECIMALS$).$