Question

A sequence is given by the rule c(n)= 28-4(n-1). Which of the following is the value of its fifth term?

(1) 12
(2) 15
(3) 18
(4) 21
60

Answer 1

12

Explanation:

Given rule for a sequence:

`c(n)=28-4(n-1)`

To find the fifth term in the sequence, substitute n = 5 into the given equation:

`\begin{aligned} n=5 \implies c(5)& =28-4(5-1)\\& =28-4(4)\\& =28-16\\& =12\end{aligned}`

Therefore, the fifth term of the sequence is 12.