(a)[1]
For $P = 3a + 5$, determine the value of $P$ at $a = 2$.
(b(i))[1]
Find $x$ from the equation $7x = -42$.
(b(ii))[3]
Find the solution of $9(8x - 7) = 72$.
(c)[1]
For $5^8 \times 5^k = 5^{-24}$, determine $k$.
(d)[2]
Find the simultaneous solutions of $-6x - y = 13$ and $8x + y = -51$.
(e)[2]
State every possible value of $n$.
(f)[2]
Give an expression, in terms of $x$ and $t$, for the boy's total distance travelled, in metres.
(g)[3]
Work out an expression for the area of this rectangle, and write your answer in the form $x^2 + ax + b$.