Answer:
Yuri is not correct.
Step-by-step explanation:
Given expression is q(x) = 6x³ + 19x² - 15x - 28
If 'a' is a root of the given function, then by substituting x = a in the expression, q(a) = 0 
Similarly, for x = 
,

        = 
        = 
        = 
        = 
        = 
 ≠ 0
Therefore, Yuri is not correct. x = 
 can not be a root of the given expression.
 
        
                    
             
        
        
        
Answer:
 
238 pages
Step-by-step explanation:
So you can set up a proportion for this one:
714pages/3minute=x pages/1minute
Solve for X by dividing 714 by 3 you get 238pages
 
        
                    
             
        
        
        
Answer:
y=3x-2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
the dryer costs $425
Step-by-step explanation:
x = washer
y = dryer
x + y = 803
x = y - 47
using the second equation a substitute in the first equation we get
y - 47 + y = 803
2y = 850
y = $425
FYI
x = y - 47 = 425 - 47 = $378