TIMED PLS HELP!!The base of a solid right pyramid is a square with an edge length of n units. The height of the pyramid is n - 1 units. Which expression represents the volume of the pyramid? o 1/3n(n – 1) units^3
o 1/3n(n – 1)^2 units^3
o 1/3n^2(n – 1) units^3
o 1/3n^3 (n - 1) units^3​

Question 1 of 10 2 points different groups of 50 graduates of an engineering school were asked the starting annual salary for their first engineering job after graduation, and the sampling variability was low. if the average salary of one of the groups was $65,000, which of these is least likely to be the average salary of another of the groups? o a. $64,000 o b. $65,000 o c. $67,000 o d. $54,000