MP=400000,profit=20000,Discount=10% and vat=13%.find the price wuth vat

Which system of linear inequalities is represented by the graph? !

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 (%)

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