Calculating return

Suppose you accumulate $$300,000$ after investing $$1,000$

monthly for $10$ years. What interest rate$/$return did you

earn? State your answer as an APR

$\frac{\text{:}\text{\$}300,000\mathrm{.}00}{r}=$$$1,000\mathrm{.}00**[(1+r{)}^{120}-1]=>r=$

$0\mathrm{.}014x12=16\mathrm{.}41\%$ APR

Suppose you accumulate $$30,000$ after investing $$800$

quarterly for $6$ years. What interest rate$/$return did you

earn? State your answer as an APR

Suppose you accumulate $$100,000$ after investing $$5,700$

semi$-$annually for $4$ years. What interest rate$/$return did you

earn? State your answer as an APR

Suppose you accumulate $$7,000$ after investing $$20$ weekly

for $5$ years. What interest rate$/$return did you earn? State

your answer as an APR