Answer:
 At least $15.50
Step-by-step explanation:
Omar is planning to buy some new baseball shoes. He has already saved $22.50
 The shoes cost at least 38 dollars. 
At least means, greater than or equal to which is represented by the sign
≥
The inequality is given as
22.50 + x ≥ 38
x ≥ 38 - 22.50
x ≥ 15.5
Therefore, he would need to save at least $15.50
 
        
             
        
        
        
Answer:
   d.  90°, 90°
Step-by-step explanation:
Both angles intercept 180° arc WZ. They are half the measure of the intercepted arc, hence both are 90°.
 
        
             
        
        
        
I don’t understand what is abc mean but the got the answe
        
             
        
        
        
Answer:
0
Step-by-step explanation:
So we have the expression: 

And we want to evaluate it for x=-4 and y=8. 
So, substitute: 

Multiply: 

Add: 

Evaluate: 

So, our answer is 0. 
And we're done!