Question

using the explict formula find the 11th term f(n)=21 +2(n-1)

Answer 1

We are given the explicit formula to be f(n) = 21 + 2(n - 1)

Where n is the number of terms

Find the 11th term

From, f(n) = 21 + 2(n - 1)

Let n = 11

f(11) = 21 + 2(11 - 1)

f(11) = 21 + 2(10)

f(11) = 21 + 20

f(11) = 41

The answer is 41