Which of these are considered Functions? A) input: student ID number, Output: number of years enrolled at a university

B) Input: number of years enrolled at a university, Output: Student iD number.

C) input: student first name, Output: Student favorite color

D) student favorite color, Output; student first name.

E) input: month of 2021, output: average profit at a fast food

Thank you! I’ve been stuck on this for awhile

x = 3 ± √(5+y)

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

i would say true? if the unit was informational and it "refreshed your understanding", then true.