Art isn’t mine! But I hope you guys have a nice day (free pointz)

Do u just plot the numbers on the graph like (1,

What is the equation of the graph below? y=sec(x)-4

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 (%)