Question

What is the fifth term in the geometric sequence described by this explicit formula y=40×(-2)^(n-1)​

Answer 1

The fifth term is 620

Explanation:

y=40×(-2)^(n-1)​

The 5th terms means n=5

y = 40 * (-2) ^ (5-1)

= 40 * (-2) ^4

= 40 * (16)

= 640