Tyrell went to the park to go jogging. The beginning of the running path has an elevation of -2 feet. the highest elevation on the jogging path is 14 feet. What is the difference in elevation between the highest point of the beginning of the path?

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 (%)