Apunch recipe calls for cups of orange juice, cup of pineapple juice, and cups of mango juice. how many total cups of fruit juice does the recipe make?

A3x4x5 rectangular cuboid (e.g. a brick) is painted blue and cut into 1x1 cubes. what is the expected value for the painted sides of a randomly selected cube?

Can somebody me out with this question

Which value is not a solution of 8x^3 – 1 = 0