Answer:
I dont know
Step-by-step explanation:
SORRRYYY
Given that the number is x,
10% increase will give us a new number of:
110/100*x
=1.1x
10% decrease will give us a new number of:
90/100*1.1x
=0.99x
This implies the new number is less than the original number
X= -10
You may review the image Ive attached to see how I got this answer.
Answer:
The vertex of the function
is 
Step-by-step explanation:
I've graphed this on desmos for a visual