7x+3y=30 m , i need only correct answers

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?

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Which equation represents a line that passes through the point (9, -4) and has a slope of 3/5?