Eric Nicholas K's answer to Tarah toh's Secondary 3 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Here are my insights into how to solve Q1 a(i). In red are my explanations; in blue are the workings to include when you write up your answers.