Question

What is the sixth term in the geometric sequence described by this explicit formula? an=-5*(4)^(n-1)

Answer 1

`a_(6)` = - 5120

Explanation:

To obtain the sixth term substitute n = 6 into the formula

`a_(6)` = - 5 ×
`4^(5)` = - 5 × 1024 = - 5120

Answer 2

-5120

Explanation:

Replace the n in the formula by 6.

a6 = -5(4)^(6-1)

= -5 * 4^5

= -5120