Apainting includes a frame of a fixed width around the painting. the total area of the painting is represented by the expression (4+2x)(9+2x) . what does the (9+2x) represent?

Which answer is it for it to be simplified completely?

The volume of a cube is 8 in to the 3rd power. how long is each side?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before