7 and - 1 1/2 on the number line?

What can you determine about the solutions of this system

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 (%)

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d? are he re