Anyone wanna zoom wit us

Solve: 3x+y=6 4x-2y=18 show all work !

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 (%)

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4