Answer:
It's D.
Step-by-step explanation:
There are no repetitions of the x values in the ordered pairs so they are all functions.
Answer: 20 Decibels
I don't know
what topic is this please
-3<x<3
let y=0
0=x^2-9
0=(x+3)(x-3)
x=-3 and x=+3
5
I just know already
gfsv