(a(i))[2]
$8p+2r+4p-9r$
(a(ii))[1]
$4x^3\times6x^2$
(b)[2]
Write down an expression, in terms of $x$ and $y$, for the overall cost of $x$ cakes at 90 cents each together with $y$ drinks at 75 cents each.
(c)[2]
Factorise completely: $12p^2 - 8p$
(d)[3]
Solve this. $4(7r - 3) = 128$
(e)[4]
Solve these simultaneous equations: $4x + 3y = 43$ and $6x + 7y = 92$.