has critical points where the derivative is 0:
The second derivative is
and 
, which indicates a local minimum at 
with a value of 
.
At the endpoints of [-2, 2], we have 
and 
, so that has an absolute minimum of 
and an absolute maximum of 
on [-2, 2].
So we have
It equals 5- hope this helps---
Answer:
x ≤5
Step-by-step explanation:
There is a closed circle at 5 so that means equals
The line goes to the left so that means less than
x ≤5
To buy the radio it would cost $22.5 I believe
To have it delivered it would cost $2.5 I believe
So overall that would cost $25
( I apologize if I'm wrong)
