LEE KE QIN's answer to Newzealand's Junior College 1 H1 Maths question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
LEE KE QIN
Lee Ke Qin's answer
28 answers (Tutor Details)
I think my answer for part 2 is alittle better. You can take a look.