Which sentence can represent the inequality StartFraction n over 4.2 EndFraction less-than-or-equal-to 21? The quotient of a number and 4.2 is less than or equal to 21. The quotient of a number and 4.2 is less than 21. The quotient of 4.2 and a number is less than or equal to 21. The quotient of 4.2 and a number is less than 21.