You have been reading your book for about 7 days
7(10) pages each day + 9 left
70+ 9 = 69
        
                    
             
        
        
        
Answer:
$4
Step-by-step explanation:
The equation for direct proportionality = 
y = bx
where y = dependent variable 
b = constant 
x = independent variable 
There is positive proportionality is two variables are positively related to each other.
In this question, price of lunches is the dependent variable while number of lunches is the independent variable 
$16 = b4
Divide both sides by 4 to find b 
b = $4
 
        
             
        
        
        
Digit 4 in 49,308 is ten thousands and the 4in 4061 is thousands
        
                    
             
        
        
        
Show the graphs so we can see