Answer:
-6
Step-by-step explanation:
We are given x=- 3 , y= 6 and z= -4. 
We are also given the expression: 
-15 + (-x) +y 
Substitute -3 in for x and 6 in for y. 
-15 + (- -3) + 6 
2 negative signs creates a positive sign 
-15 + (+3) +6 
-15 + 3+ 6 
Add -15 and 3. 
(-15+3) +6 
-12 +6 
Add -12 and 6.  
-6
-15+(-x)+y evaluated at x= -3 and y=6 is equal to -6. 
 
        
             
        
        
        
Substitute 50 loaves into the given equation 
y= cost to make 50 loaves
y= 0.80x + 100
y= 0.80(50) + 100
multiply first, then add
y= 40 + 100
y= $140 cost to make 50 loaves
Hope this helps!
        
             
        
        
        
100% - 55.7%
= 100% - 55% - 0.70%
= 45% - 0.70%
= 44.30%
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This means that the probability of selecting a female student at random is 44.3% as a percentage.
        
                    
             
        
        
        
Answer:
5/2x, 5/2 y
Step-by-step explanation:
An enlargement means the scale factor must be greater than one
The only choice with a scale factor greater than one is 5/2x, 5/2 y