Point P is plotted on the number line. Point Q is the opposite of point P. Determine the location of point Q on the number line. Explain how you determined the location of point Q on the number line.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)