Answer:
78.75 (simple) 81.54 (compound)
Explanation:
Simple interest without compounding : I = P * (1 + rt) -P
I: interest P: primary investment r: annual rate t: time in year
I = =750 * (1+ 0.035*3) -750 = 78.75
Compound interest I = （P *（1 +r）^ t）-P
I' = 750*(1+0.035)*(1+0.035)*(1+0.035) - 750 = 81.54