If x =3, y = -2 and z = 6, find the value of 7xyz

What is the volume of the sphere shown below with a radius of 3?

Use set builder notation to represent the following set: { -3, -2, -1, 0}

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest