F.3數5條,20分,急!!!!!!!!!!!!!!!!!!

1 Let the amount is P[P(1 + 4%)^3 - P] - P(0.04)(3) = 243.2P = $50000 (原文欠了年數3年)2 Let the amount is P[P(1 + 20%/2)^4 - P] - P(0.2)(2) = 128.2P = $2000 (應該是compounded half yearly)3 BE = C至DG的垂直距離 + B至C的垂直距離= x(sinθ + cosθ)4 畫T至SR的垂線﹐記交點MSR = SM + RM = xcosa + ysinbRQ = TM - T至Q的垂直距離 = xsina - ycosb5 BC = 5。畫過C與EF平行的水平線BD = C至EF的垂直距離 + B至C的垂直距離 = 12sinθ + 5cosθ