Exercise
Nov 20'23
Answer
Solution: E
Solution: [math]4000\left(1.04^3\right)=1400\left[1+(1+i)+(1+i)^2\right][/math], or [math]i[/math] solves the quadratic equation: [math]i^2+3 i-0.2139=0[/math]. Thus, [math]i=6.97 \%[/math] because the other root is negative.