Assume that at the beginning of the year, you purchase an Investment for $7,800 that pays $154 annual income Also assume the Investment's value has increased to $8,500 by the end of the year. a. What is the rate of return for this investment? Note: Input the amount as a positive value. Enter your answer as a percent rounded to 2 decimal places. Rate of return % b. Is the rate of return a positive or a negative number? O Positive O Negative