Question

What is the value of the 11th term in the following geometric sequence?

-5, -10, -20, -40



-5,120

-100

-180

-19,531,250

Answer 1

Hello,


`a_(1)=-5`

`a_(2)=-5*2`

`a_(3)=-5*2^2`
...

`a_(11)=-5*2^(10)=-5120`

Answer A