What is the volume of the right prism?

What is 20+(5 x 2/5 )+ 3 show your work

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?

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 (%)