Answer:
$149.09
Step-by-step explanation:
56.75-14.10=42.65
42.65+41.50=84.15
84.15-11.03=73.12
73.12-7.25=65.87
65.87+83.22=149.09
 
        
             
        
        
        
Answer:
A. 
Step-by-step explanation:
2/hour
2×4 hours =8 dollars ;
Then 3x(because we dk the time taken, so replaced by x and then times 3)
Equation =8+3x
 
        
             
        
        
        
Answer:
x  15
 15
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-21x^2+6x+3
Step-by-step explanation:
distributive property
 
        
             
        
        
        
Let X = science homework.
Then math homework would be 3x ( three times as long).
Now you have math plus science = 64 minutes:
x  + 3x = 64
Combine like terms:
4x = 64
 Divide both sides by 4:
x = 64 / 4
x = 16
He spent 16 minutes on science and 48 minutes on math.