Answer:
In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.  
Step-by-step explanation:
To find out which one will be cheaper you need to know where they intersect, to do this you need to set up a system of equations. 
y=28x+590 (chefs)
y=31x+425 (cece's)
to know where they intersect you need to make the y=0 
28x+590=31x+425 
Then solve
subtract the x from each side 
590=3x+425
Subtract 425 from each side
3x=165
divide each side by three 
x=55
now evaluate
Place a number above 55 (60 for example) into the place of x
28(60)+590=2,270
31(60)+425=2,285
In this scenario you should use chefs if you have less than 55 people and you should use cece's if you have more than 55 people.  
 
        
             
        
        
        
Answer:
J =2m -3
Step-by-step explanation:
2m is twice Monica's age 
-3 represents 3 years younger 
 
        
             
        
        
        
Quadrilateral and parallelogram 
Squares are rectangles but rectangles are not squares b/c (not all sides are same length)
        
             
        
        
        
Answer:

Step-by-step explanation:

Simplified becomes;

Simplifying further gives; 
 
        
             
        
        
        
Answer:
radius=2
Step-by-step explanation:
if the circumference=4pi and the formula is 2pir then r must be 2 and would look like this:
C = 2pir
C = 2pi2
C = 2*2pi
C = 4pi