Higher November 2023 Unit 1 Q3

(a) Write down an expression for the \(n\)th term of the following sequence. [2]

11,    15,    19,    23,    ....

(b) The \(n\)th term of a different sequence is given by \(n^2 - 5\).
Write down the first three terms of this sequence. [2]

First three terms are ……………………,   ……………………,   ……………………