Question

The expression log3 (8-x) is defined for all values of x such that

A) x > 8
B) x >_ 8
C) x < 8
D) x <_ 8

Plz explain!!!

Answer 1

log3 (8-x) is defined if 3(8-x)>0,8-x>0 so x>8
the answer is C) x < 8