Answer:
22
Step-by-step explanation:
Find f(-3) :
f(x) = x² + 2x for x ≤ -3
That means for those values of x, less than or equal to -3, this is the function.
So, f(-3) = (-3)² + 2(-3) = 9 - 6 = 3
Now, f(-1) :
From the given data, we see it is: f(x) = 2  
We take this because -1 lies between -3 and 4.
Now, f(-1) = 2  
  =>  
For f(4) :
Clearly, the function is:  
 
Therefore, <u>f(-3) + f(-1) - f(4) = 3 + 18 - (-1) = 3 + 18 + 1 = 22.</u>
 
        
             
        
        
        
Answer:
window sill height =9.75 meters
Step-by-step explanation:
Ladder^2=height^2+length^2
12^2=height^2+7^2
144=height^2+49
height^2=144-49=95
height=9.75
 
        
             
        
        
        
Answer:
Inequality: x > -2
Interval Notation: ( -2, ∞)
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
0.15
Step-by-step explanation:
6 divided by 24 equals 0.25
12 divided by 30 equals 0.4
0.4 minus 0.25 is 0.15
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
No solutions