Question

What is the 7th term in the geometric sequence described by this explicit

formula?
an = 800 - (0.5)(n-1)

Answer 1

a₇ = 797

Explanation:

substitute n = 7 into the explicit formula

a₇ = 800 - 0.5(7 - 1) = 800 - 0.5(6) = 800 - 3 = 797