Answer:
x = 4
Step-by-step explanation:
f(x) = I x+1 I
when x = -5
f(-5) = I (-5) +1 I
= I -5+1 I
= |-4|
= 4
substitute x for -5
f(-5)=|-5+1|
f(-5)=|-4|
however, absolute value is the distance from 0 and so is always positive since you cannot have negative distance.
so f(-5)=4
