Answer:
Unit rate: $15 per hour 
ordered pair: (1 ,15)
Step-by-step explanation:
30 ÷ 2 = 15
45 ÷ 3 = 15  
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they both have 15, which means the graph is proportional and the unit rate is $15 per hour
 
        
             
        
        
        
Answer:
4
Step-by-step explanation:
3x2 is 6 
2-4 is -2
6-2 is 4
 
        
                    
             
        
        
        
Answer:
$1.95
Step-by-step explanation:
notebook = n
pencil = p
3n + 2p = 5.10
2n + 3p = 4.65
multiply top equation by 2 and bottom by 3
6n + 4p = 10.20
6n +9p = 13.95
subtract bottom equation from the top equation
-5p = -3.75
divide by 5, negatives cancel out
p  = 0.75
sub p into either equation, I chose the original top equation
3n + 2(0.75) = 5.10
3n + 1.50 = 5.10
subtract 1.50 from both sides
3n = 3.60
divide both sides by 3 
n = 1.20
p = 0.75
n + p = 1.95 (the fourth option)