(a)[1]
For this sequence, the term-to-term rule is: multiply by $2$ and add $3$. The first three terms are $1, 5$ and $13$. Write down the next term in this sequence.
(b(i))[1]
For this other sequence, the term-to-term rule is: square the term and subtract $5$. The second and third terms are $-1$ and $-4$. Write down the fourth term in this sequence.
(b(ii))[2]
Write down the two values that the first term could take in this sequence.