Answer:
An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.
Step-by-step explanation:
Hopes this help. 
 
        
             
        
        
        
126 ft of fabric.
Explanation:
14x9 or 10x9+4x9
        
                    
             
        
        
        
Answer:
The cost of one burger is $2.95
The cost of one fry is $1.45
Step-by-step explanation:
Let
x----> the cost of one burger
y---> the cost of one fry
we know that
 ----> equation A
 ----> equation A
 ----> equation B
 ----> equation B
Using a graphing tool
Remember that the solution of the system of equations is the intersection point both graphs
The intersection point is (2.95,1.45)
see the attached figure
therefore
The cost of one burger is $2.95
The cost of one fry is $1.45
 
        
             
        
        
        
Answer:
The annual rate of inflation r is $0.013
Step-by-step explanation:
Annual rate of inflation r = (p2p1)1/n-1 = p2p1/n-1
p2 = $5.83, p1 = $0.22, n = 2013 - 1913 = 100
r = $5.83 × $0.22/100 - 1 = $1.2826/99 = $0.013 (to the nearest thousandth)
 
        
             
        
        
        
Answer:
x=34
Step-by-step explanation:
3x+1+2x+9=180
10+5x=180
5x=170
x=34