Answer:
f(-2) = -1
f(0) = -5
f(4) = -1
Step-by-step explanation:
The number inside of f( ) is telling you which equation to use to get the answer. 
Example: 
f(-2) since -2 is less than 0 you would use (x^2) - 5. So, ((-2)^2) - 5 = 4-5 = -1
f(0) since 0 is less than or equal to 0 you would use (x^2) - 5 again. So, ((0)^2) - 5 = 0-5 = -5
f(4) since 4 is grater than 3 you would use (2^(x-1)) - 9. So, (2^(4-1)) - 9 =  -1
<u><em>The Graph, try to make it as straight as possible</em></u>
<u><em></em></u>
 
        
             
        
        
        
Answer:
go up 1 from 9x and left 2
Step-by-step explanation:
-1/2 is the slope of the line
up means pos
right means pos
down means neg
left means neg
 
        
             
        
        
        
9514 1404 393
Answer:
   x = 3
Step-by-step explanation:
The two right triangles share angle A, so the similarity statement can be written ...
   ΔABC ~ ΔADE
Corresponding sides are proportional, so we have ...
   BC/DE = AB/AD
   x/12 = 3/(3+9)
   x = 3 . . . . . . . . . . multiply by 12