Question

Find an explicit formula for the geometric sequence − 9   , − 18   , − 36   , − 72 , . . . −9,−18,−36,−72,...minus, 9, comma, minus, 18, comma, minus, 36, comma, minus, 72, comma, point, point, point. c ( n ) = c(n)=c, left parenthesis, n, right parenthesis, equals

Answer 1

9

Explanation:

ur welcome

Answer 2

Explanation:

The first term is -9, and the common ratio is 2. So the explicit formula is:

c(n) = -9 (2)ⁿ⁻¹