Calculus- need help with this problem. Above the sigma is an infinity sign and below it says n=1
The equation is 6*(-1/4)^n-1

Answer: B
Step-by-step explanation:
S = An/1 - r
A1 = 6
6/1 - (-1/4)
6/1 + (1/4)
6/1.25
S = 4.8 or 24/5