PLEASE HELP ME I'LL MARK BRAINLIST Solve the following system of equations. SHOWING ALL STEPS.

5x-4y=-2

2x+4y=16

Use the \sqrt{x} button to show your math and steps. Also, a table might help you organize your work.

Which is the completely factored from of xy^3-x^3y

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 (%)

What is the slope of the line shown below?