(a(i))[2]
Work out the value of $c$ for $a = 8$ and $b = -3$.
(a(ii))[2]
Rewrite $c = 5a - 2b$ so that $a$ is the subject.
(b)[1]
Factorise $3x + 12$.
(c)[2]
Expand $x(2y + x)$.
(d)[4]
Use the information to write an equation and solve it to determine $n$.