Turn it into slope-intercept form. 
2y = -x + 14
y = -x/2 + 7
The slope is -1/2. 
Perpendicular lines have slopes that are opposite reciprocal, so the slope of the perpendicular line is 2.
        
             
        
        
        
Answer: if we divide the numerator and denominator by two, we get that he can paint two paintings in one hour. His unit rate is 2:1. 
4:2 divide by two to make the denominator 1
2:1 solution has 1 in the denominator
Step-by-step explanation:
 
        
             
        
        
        
Answer:
C. $0.19/ounce
Step-by-step explanation:
We know that 16 ounces = 1 pound but we have 5 pounds,
So, we do 5 times 16.
We get 80 (ounces)  and we divided ounces by total cost ($15.25)
We get our answer:
$0.19/ounce
 
        
                    
             
        
        
        
Answer:
The exponential model is  .
.
Step-by-step explanation:
The exponential model can be modelled by the following mathematical expression:
 (1)
 (1)
Where:
 - Independent variable.
 - Independent variable.
 - Dependent variable.
 - Dependent variable.
 - Coefficients.
 - Coefficients.
If we know that  and
 and  , then we get the following system of equations:
, then we get the following system of equations:
 (2)
 (2)
 (3)
 (3)
If we divide (3) by (2), we calculate the value of  :
:



And by (2), we determine the value of  :
:


The exponential model is  .
.