Hey there!
1a. Let c=cost of dinner, 5=the # of people, and P=the cost of person
P=C/5
b. <span>P = (1000)/5 </span>
<span>P = 200
</span>
2a. For 1= 19, 2= 38, 57= and so on ( you just multiply the number of season by 19)
b. T= 19n
        
             
        
        
        
Answer:
The value at x =3 is undefined for the given expression 
Step-by-step explanation:
Given expression is 
To find for what value of x is undefined in the given expression :
 

 
If we put x=3 in the above expression we get



Therefore 
The value at x =3 is undefined for the given expression 
 
        
             
        
        
        
<span>  x - 4y = -5 
-x + 6y = 7
---------------add
       2y = 2
         y = 1
</span>     x - 4y = -5 
  x - 4(1) = -5 
      x - 4 = -5
           x = -1
answer
x = -1 and y = 1
        
             
        
        
        
If he is out of flour, and needs 2 cups for each pizza. He is making three so 2x3 is 6 cups total. 20-6=14
        
                    
             
        
        
        
Answer: 186+14-26+5=179 pounds
Step-by-step explanation:
1. Regainged 5 pounds and weighed 179 pounds = So he weiged 179-5=174 pounds."and lost 26 pounds" 
2. To weigh 174 pounds,so he used to weigh 174+26=200 pounds, David gained 14 pounds over the winter, so he weighed 200-14=186 pounds.
3. Check 186+14-26+5=179 pounds
If you are doing algebra, then X+14-26+5=179
Solve for X.
HOPE THIS HELPS!! :)) TRIED MY BEST!!