Question 1033291
{{{A = P(1+r/n)^(nt)}}}, where A = $4200, r = 0.04, n = 4 (quarterly), and t = 9.

==> {{{4200 = P(1+0.04/4)^(4*9)}}} <==> 4200=P*1.430768784  

==> P = $2,935.48, the value that has to be invested now.