A deposit of $500 (PV) made five years ago is worth $705.30 today (FV). The deposit pays interest semi-annually. What is the interest rate?

Note: If you press √ means that the reciprocal of power 2 (^2). In this calculation, it refers to power 10@ ^ 10, therefore 10√

From the calculator, you press 10 then SHIFT then ^..10 ^x√ 1.4106

 FV = PV (1 + r) ^t – annually

 FV = PV (1 + r/2) ^tx2 – semiannually