megamorph
megamorph
29.08.2019 • 
Mathematics

Find an equation for the nth term of a geometric sequence where the second and fifth terms are -21 and 567, respectively.
a) an = 7 • (-3)^n + 1
b) an = 7 • ^3n - 1
c) an = 7 • (-3)^n - 1
d) an = 7 • 3^n

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