Answer:
there was a decrease of 24 degrees.
Step-by-step explanation:
7-24=-17
 
        
                    
             
        
        
        
Answer:
3x - 10 = -21
add 10 on both side
3x-10+10=-21+10
3x=-11
divide both side by 3
3x/3=-11/3
x=-11/3
Step-by-step explanation:
2. -22 - 4x = 12
add 22 on both side
-22+22-4x=12+22
-4x=36
divide both side by -4
-4x/-4=36/-4
c=-9 is your answer
 
        
             
        
        
        
Answer:
y = -5x + 20
Step-by-step explanation:
Lets start with the first given values for x and y
(2,10) 
Lets try out the first equation
y = 5x + 4
y = 5(2) + 4
y = 14
This equation wouldn't work because the y value is not 10 when the x value is 2
y = 5x + 20
y = 5(2) + 20
y = 30
This equation doesn't work either
y = -5x + 20
y = -5(2) + 20
y = -10 + 20
y = 10
This would be the correct equation since your y value is 10 when the x value is 2
 
        
                    
             
        
        
        
She can make 3 batches. 3 batches will take 3 3/4 cups. If she made 4 it would take 5 cups