Question 93765
5, -25 , 125, -625........
This is a geometric sequence ...
f(n) 10 a*r^(n - 1) where: a is the first term, r is the rate, n is the nth term
f(n) = 5*(-5)^(10 - 1)
f(n) = 5*(-5)^(9) = -9,765,625