40 fewer than a number which is T would be
C 40-t
25% for 90deg
15% for 54deg
10% for 36deg
All I did was put the degree number over 360 and moved the decimal place to the right twice :)
Interest rate i=19.1% compounded annually.
Initial deposit, P=48900
Time t=53 months=53/12 years
Use compound interest formula
Future value,
F=P(1+i)^(t)=48900(1+0.191)^(53/12)
= $105,824.40 (to the nearest cent)