David measures a rectangular piece of wood. The length is 8 feet and the width is 2 feet. What is the area, in square feet, of the piece of wood? A = lw

2-digit numbers less than 91 which are 1 less than a multiple of 10

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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 (%)