(a(i))[2]
Express $\frac{6y}{35} \div \frac{10y^2}{7}$ as a fraction in simplest form.
(a(ii))[3]
Express $\frac{k^2 - 16}{k^2 - 2k - 8}$ as a fraction in its simplest form.
(b)[2]
Solve the equation $3(x - 4) + 5 = 7$.
(c)[3]
Solve $3t^2 + 5t - 4 = 0$. Show all your working, and give your answers correct to $2$ decimal places.