Find the value of x.

12 is 33 1/3% of 36 what is the whole

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

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 (%)