Its $36 if it is only for his three roommates
and
$27 if it is only for his three roommates w/ Jason
        
             
        
        
        
Answer:
x^2 -2x + 1
Step-by-step explanation:
Think of a quadratic equation as
ax^2 + bx + c
x^2 -2x +
Comparing the two equations
a = 1 ,  b = -2,  c = ?
c becomes the missing part
Divide b by 2
-2/2 = -1
square the result
-1^2
= 1  this is what to add to get a perfect square
x^2 -2x + 1
(x - 1)^2
 
        
             
        
        
        
Hello,
Let's x² the square number 
and 3*y the multiple of 3.

2 solutions : for (x,y) as integers : (-6,18) and (6,18)
but one solution for (x²,3y) as integers :<u> (36,54) </u>
 
        
             
        
        
        
The 8th number in this sequence is -16. You are subtracting 3 between each set of numbers. 
a1= 8-5= 3
a2= 5-2= 3
a3= 2-(-1)= 3
a4= -1 - (-4)= 3
a5= -4 - (-7)= 3
a6= -7 - (-10)= 3 
a7= -10 - (-13)= 3 
a8= -13 - (-16)= 3
ANSWER: -16
Hope this helps! :)