Assume that at the beginning of the year, you purchase an investment for $7,100 that pays $80

Question:

Assume that at the beginning of the year, you purchase an investment for $7,100 that pays $80 annual income. Also assume that the investment's value has increased to $7,590 at the end of the year.
a. What is the rate of return for this investment?
b. Is the rate of return a positive or negative number?