(a(i))[2]
Find the values of $x$ for which $g(x) = 20$.
(a(ii))[2]
Find the expression for $f^{-1}(x)$.
(a(iii))[3]
Find $gf(x) + 1$, and give your answer in simplest form.
(a(iv))[4]
On the axes, sketch the graph of $y = g(x)$. On your sketch, show where the graph meets the axes.
(a(v))[5]
Find the equation of the tangent to the graph of $y = g(x)$ at $x = -3$. Give your answer in the form $y = mx + c$.
(b(i))[2]
On the axes, sketch the curve for $y = h(x)$.
(b(ii))[1]
Write down the equation of the asymptote for the graph of $y = h(x)$.