Question

Find an explicit rule for the nth term of the sequence.

-5, -25, -125, -625, ...

Answer 1

an = -5 • 5n

an = 5 • -5n + 1

an = 5 • -5n

an = -5 • 5n - 1

Answer 2

this is a geometric progression with a=-5
r=5
cant u proceed from there?

Answer 3

no, i have no idea how to do this type of problem :( @AravindG

Answer 4

nth term of gp=ar^n-1
here -5(5)^(n-1)

Answer 5

so the last option?

Answer 6

@AravindG

Answer 7

yep

Answer 8

thank you :)

Answer 9

what about
Find an explicit rule for the nth term of the sequence.

9, 36, 144, 576, ...

an = 9 • 4n - 1

an = 4 • 9n - 1

an = 9 • 4n

an = 9 • 4n + 1