Answer:
D
Step-by-step explanation:
Firstly,  
≤  or  ≥  means closed circle, and
<   or >  means open circle
Now, let's solve the compound inequality:
x - 1 ≤ 7
x ≤ 8
and
2x ≥ 22
x ≥ 11
This solution means "everything left of 8 (inclusive and closed circle)" and "everything right of 11 (inclusive and closed circle)"
Looking at the choices, D is right.
 
        
             
        
        
        
Answer:
20x+21y+14
Step-by-step explanation:
Combine like terms:
150x-80y+50-50x-25y+20=
100x-80y+50-25y+20=
100x-105y+50+20=
100x-105y+70
100x-105y+70 can be divided by 5 and get 20x+21y+14.
 
        
             
        
        
        
Answer:
2x - 3y
Step-by-step explanation:
Distribute -1/4 to all the terms in the brackets.
-1/4(-8x) -1/4(12y)
2x - 3y
 
        
             
        
        
        
Answer:
Nevaeh will have 1224.33 and Paisley will have 1275 
 
        
             
        
        
        
Answer:
$2.69
Step-by-step explanation:
Distribution method: 
.20(2.50, 4.95, 6.00)
(0.50, 0.99, 1.20) 
Now add them up.
Non-distribution method:
$2.50 x .20 = 0.50
$4.95 x .20 = 0.99
$6.00 x .20 = 1.20
Add them up