(a(i))[2]
Find the value of $P$ for $k=3$.
(a(ii))[3]
Rearrange the formula so that $k$ is the subject.
(b(i))[2]
Solve $x-3\le5x+7$.
(b(ii))[1]
Show your answer to part (b)(i) on the number line.
(c(i))[6]
Draw three additional lines and shade the part that is not needed, then find and label region $R$.
(c(ii))[2]
Find the integer coordinates $(x,y)$ in region $R$ that produce the maximum value of $2x+y$.