(a)[2]
$s = \frac{1}{2}at^2$. Determine the value of $s$ for $a = 9.8$ and $t = 20$.
(b)[3]
Solve for $y$ in $5(4y - 3) = 15$.
(c)[2]
Expand and simplify the expression $3(5x - 8) - 2(3x - 7)$.
(d)[3]
Rearrange $A = 2b^2 - 3c^3$ so that $c$ is the subject.
(e)[2]
Factorise completely the expression $6pq - 4q - 3p + 2$.