Answer:
y = 28 - x
Step-by-step explanation:
The variable x represents how many buttons Paula had before giving 28 away and the variable y represents how many buttons she has now. 
 
        
             
        
        
        
You would multiply 2 1/2 and 3 3/4, which would give you 9.375 or as a mixed number 9 7/8
        
             
        
        
        
Answer:
theres no picture
Step-by-step explanation:
 
        
                    
             
        
        
        
The equation in slope intercept form would be: y= 1/26x - 2
        
                    
             
        
        
        
Answer: The concentration of X is  and the concentration of Y is
 and the concentration of Y is  .
.
Step-by-step explanation:
Since we have given that
At 272 nm, absorbance = 0.215
At 327 nm, absorbance = 0.191
As we have given that 
                                Compound X             Compound Y
272                               16400                            3870
327                                3990                             6420
So, our equations becomes

By solving these two equations, we get that

Hence, the concentration of X is  and the concentration of Y is
 and the concentration of Y is  .
.