Please show work using no exponets:

You are trying your hand at investing in the stock market. Your first pick is a landscaping company listed on NASDAQ $($their motto: "when you're too lazy to do it yourself $-$ call us$!").$ You bought the stock one year ago for $$12\mathrm{.}00.$ Today you sold it for $$17\mathrm{.}50$ and during the year the stock paid you a $$1\mathrm{.}00$ dividend. What was your one$-$year rate of return?