Cos(x+(pi/2))+sin(pi+x)
simplified is?

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 (%)

Graph a point. start at your origin, move left 10 units, and then move up three units which ordered pair is the point you graphed

Benjamin believes that ¼ % is equivalent to 25%. is he correct? why or why not?