Answer:
5
Step-by-step explanation:
A rule is that if there is a negative sign before the parenthesis and in the parenthesis next to each other, you make it a addition sign. So it would be 4+1. Which is 5.
Same as before, to make the formula do
t(1) * (r)^n-1
So 5 * (-1/2)^n-1
Therefore
5*(-1/2)^5
0.078125
