Here's the work:
Density = mass/volume = 129g/(5*3*2) cm^3 = 4.3 g/cm^3.
(2x4 - 3x3 - 6x2 + 11x + 8) = (x-2) x = 0.25
The 0 is in the thousands place.
A. The multiplier is (1 +.055/12)^12 ≈ 1.0564079
b. The multiplier is (1 +.054/365)^365 ≈ 1.0554804
c. The multiplier is e^.045 ≈ 1.0460279
The rate 5.5% compounded monthly is the better choice.