Geometric series:
n= infinity sign
a1=5
r= -1/4
The equation
5(-1/4)^i-1
just as with the others, the sum is
a1/(1-r)
just plug in your numbers.
n= infinity sign
a1=5
r= -1/4
The equation
5(-1/4)^i-1
a1/(1-r)
just plug in your numbers.