Find the equation of a geometric sequence given the following 2 terms.
a4 = −500
a3 = 100
a) an = -4(5)^n-1
b) an = -5(4)^n-1
c) an = 4(-5)^n-1
d) an = 5(-4)^n-1
+36915 From a3 to a4 is ONE r a3 * r = a4
100 * r = -500
r = -5
a1 * r * r = a3
a1 * (-5)(-5) = 100
a1 = 4
answer c
+36915 From a3 to a4 is ONE r a3 * r = a4
100 * r = -500
r = -5
a1 * r * r = a3
a1 * (-5)(-5) = 100
a1 = 4
answer c
