Explanation:
g(f(-5)) is a function inside another function
so lets figure the inner function first
f(x)=|2x+9|
f(-5)=|2(-5)+9|
=|-1|
=1
the |-1| means that its an absolute value
just get rid of the negative sign whenever u see the | | thingy
so
f(-5)=1
therefore
g(f(-5))=g(1)
and, it should be another function( g(x)=... ), otherwise u wont be able to get an actual value
probably u missed it in your book or something?