I need help, urgently.

Which of the following expressions is equal to 2x^2+8

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit