50 + (50 * 0.065) = the answer, sorry I don't have my calculator on me.
1st one is 40
2nd is 4
3rd is 12
The sum of a geometric sequence is:
s(n)=a(1-r^n)/(1-r) in our case:
s(n)=3(1-4^n)/(1-4)
s(n)=-(1-4^n)
s(n)=(4^n)-1 and s=1023
(4^n)-1=1023
4^n=1024
n ln4=ln1024
n=(ln1024)/(ln4)
n=5
Do a linear equation just with the 6 and 1/2 because the 11 is negetive so your answers is -4 1/2
