Answer:
C
Step-by-step explanation:
x+4y=-12
x+7y=-15
subtract
-3y=3
y=-1
x+4(-1)=-12
x=-12+4=-8
so point is (-8,-1)
 
        
             
        
        
        
Answer:
36.
Step-by-step explanation:
 In the scale of the model, it says 1:36, which means that one tractor-trailer is the size of 36 models. 
<h2>
<em><u>If you need more help or explanation, follow up in the comments. :P</u></em></h2>
 
        
             
        
        
        
Answer:
12x + 96 ≥ 200
Step-by-step explanation:
Each ticket costs 12 each= 12x
He has already sold 96=+96
he needs to make 200
12x+96>= 200
Plz mark brainliest
 
        
             
        
        
        
Answer:
KM=41.6
Step-by-step explanation:

Cross Multiply and Solve for KM.

 
        
             
        
        
        
Let x = sue
and then let 3x-84 = marcia
therefore
(x)+(3x-84)=132
4x-84=132
4x=216
x=54
however just solving for x doesnt completely solve. it only shows sues money because x = sue
for marcia
3x-84
3(54)-84
162-84
78
therefore Marcia has 78$.