End of First Year (750/100)x12(3/5)=54 $750+54=804
End of Second Year (804/100)x12(3/5) = 58 $804+58=862
End Of Third Year (862/100)x12(3/5) = 62 $862+62=924
STOCK WORTH NOW = 924
The 8lbs. one is better. you can tell cuz 4 is half of 8 but the 4lbs. bag costs more than half of the 8lbs. bag.
Solve for "years" (t)
A=P e^(rt)
A=1000
P=500
e=e
r=0.0462
Solve for t: use natural logarithms
(0.0462)t=in 2
t=15 years
X=25 ...... ................