What is the sales price of a $18.95 football with a 15% discount?

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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 (%)