Question

An arithmetic sequence is defined by fn = 7 + 8(n – 1). What is the value of f1

Answer 1

f(11) = 87

Explanation:

substitute n = 11 into f(n) , that is

f(11) = 7 + 8(11 - 1) = 7 + 8(10) = 7 + 80 = 87