Rewrite -30 - (-24) +20 -7 in a different equation

And I don’t know how to do the N P chart

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 (%)

Given the graphed function below which of the following orders pairs are found on the inverse function

Someone me i need with this stuff