The formula is A=p (1+r)^t A future value 572.6 P present value 560 T time 6/12 =1/2=0.5 R interest rate? We need to solve for r R=(A/p)^(1/t)-1 R=(572.6÷560)^(1÷0.5)−1 R=0.0455×100 R=4.55%
Hello here is a solution look graph : the curve : color blue the first tangent : y = 0.13x +1.87 color Pink the second tangent : y = 1.88 x +0.14 color green