Im so lost right now
i feel pretty stupid for not knowing this but, i think i do know it but im just confused..

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

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