Challenge Level

Why do this problem?

The problem gives practice in solving linear and quadratic inequalities.

Possible approach

Use this as a lesson starter. If learners do not know how to start let them use the Hint.

Then discuss the problem as a class but try to elicit ideas from the learners themselves.

Key questions

How do we make use of the information given?

If we are not making progress, then have we used all the information given?