Problem 4-36 Solving for Rates (LG7) You invested $3,000 in the stock market one year ago. Today, the investment is valued at $3,480. What return did you earn? Return earned % What return would you suffer next year for your investment to be valued at the original $3,000? (Negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your final answer to 2 decimal places.)