7. In cell N2, enter a formula using the IF function and structured references as follows to determine which work tier Kay Colbert is qualified for: a. The IF function should determine if the student's Post-Secondary Years is greater than or equal to 4 , and return the value 2 if true or the value 1 if false. b. Fill the formula into the range N3:N31, if necessary. 8. Lael wants a quick way to look up students by their Student ID. In cell Q3, nest the existing VLOOKUP function in an IFERROR function. If the VLOOKUP function returns an error result, the text Invalid Student ID should display. 9. Lael wants to determine several totals and averages for active students. In cell Q8, enter a formula using the COUNTIF function and structured references to count the number of students who have been elected to offices in student organizations