The range of which function includes - 4?

A. y=sqrt (x) - 5

B. y=sqrt (x) + 5

C. y=sqrt (x+5)

D. y=sqrt (x-5)

Function under A) has range x>0 because we cant calculate square root of negative number (we can if we include imaginery numbers)

B) again x must be greater than 0

C) x + 5 > 0 which means that x > - 5

-4 is withing range so C in correct

D) x - 5 > 0 which means x > 5

Answer is C because only function under C has domain such that it includes - 4