Answer:
∠z is 79°
Step-by-step explanation:
 
        
             
        
        
        
Answer:
11.2
Step-by-step explanation:
If the rectangulars are similar then we can use similarity ratio to calculate value of x
CD is similar to RS and AB is similar to QP
4/6.4 = 7/x cross multiply expressions
4x = 44.8 divide both sides by 4
x = 11.2
 
        
             
        
        
        
3, 2.91, -0.3, -0.9, -1.01, 
 
        
             
        
        
        
You didn't describe the situation so I can't answer. 
However: if the graph of the situation is a straight line then the situation is linear, and if the graph is not a straight line then it is nonlinear.
        
             
        
        
        
If the insurance pays $2,000, but the test itself cost $2,750, you simply subtract.
$2,750-$2,000= $750
Therefore Bobby has to pay $750