Find the sum of a finite geometric sequence from n = 1 to n = 5, using the expression −3(4)n − 1. -1,023 1,223 1,023 −4,374

Question

I don't know how to do any of this at all

Answer 1

me assume yu wanna add...-1 -1023 -1223 -1023 -4374

=-7,644

Answer 2

Can't tell ya how to solve but answer is -1,023

ik bc i took the test