Answer
a. f(5)=1
b. f(-5)=-1
c. f(-9-x)=-1
Work Step by Step
a.
f(5)=$\frac{|5+3|}{5+3}$
f(5)=$\frac{|8|}{8}$
f(5)=1
b.
f(-5)=$\frac{|-5+3|}{-5+3}$
f(-5)=$\frac{|-2|}{-2}$
f(-5)=$\frac{2}{-2}$
f(-5)=-1
c.
f(-9-x)=$\frac{|-9-x|}{-9-x}$
f(-9-x)=$\frac{9+x}{-(9+x)}$
f(-9-x)=-1
