Chad purchased a new dirt bike for a competition. The salesperson recommended that the tires maintain an air pressure of at least 12psi for good traction on the riding surface. Determine which inequality represents the salesperson's recommendation. number line with open circle on the number 12 and line shaded to the left number line with closed circle on the number 12 and line shaded to the left number line with closed circle on the number 12 and line shaded to the right number line with open circle on the number 12 and line shaded to the right