While training for a marathon, Keith's watch reported how many calories he burned at each mile marker. For 1 mile he burns 117 calories. is the number of calories proportional to the number of miles ? explain

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 (%)