For f(x) = -x + 8, which statement is true? Group of answer choices

f(x + k) = f(x) + k

f(x + k) = f(x) + f(k)

f(x - k) = f(x) - k

f(x - k) = f(x) + k

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