$40/12 = unit rate simplify = 10/3
$10/3 per book
18 * 10/3 = $60 for 18 copies
        
             
        
        
        
Where is it????????????????????
        
             
        
        
        
Answer:
0.22
Step-by-step explanation:
2/9 as a decimal is 0.22222222
This number rounded off to its nearest hundredth is 0.22
Hope it helped
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
               Let the office charge  = x
      Amount paid by Medicare = ⅞x
Amount paid by Ross = ¼(⅞x) = $262.50
  
Solve for x

Check:

OK.
 
        
             
        
        
        
Answer:
x = y/2 - 1/2
Step-by-step explanation:
you can use the slope-intercept form of a line first, then change to terms of 'x'
y = mx + b    where 'm' is the slope and 'b' is the y-intercept
if we use two points on the line, such as (-1, -1) (0, 1), we can find the slope
m = 1-(-1) / 0-(-1)
m = 2/1
b = 1
Slope-Intercept form:  y = 2x + 1
in terms of 'x':
2x = y - 1
x = y/2 - 1/2