Boy Mow Chau's answer to Joanne's Junior College 2 H2 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Boy Mow Chau
Boy Mow Chau's answer
316 answers (Tutor Details)
1st
... skipped some steps in the equation solving, but trust that you should be able to figure them out.

Important idea here is to sketch out the curves first to identify the correct regions. Thereafter should be straight forward.