Answer:
11
Step-by-step explanation:
44 dollars after 4 days so 44 divided by 4 = 11
 
        
                    
             
        
        
        
Answer:
Check step-by-step explanation
Step-by-step explanation:
A =  
 
to solve for  :
:
 =
 = 
to solve for  :
:
 =
 = 
 
        
             
        
        
        
There are two equations and two variables. You can solve for each variable using either the elimination method or the substitution method. Here, I believe the elimination method would be best:
5a = -4b + 5
3a = -2b + 3
You can multiply the second equation by two, so the 4b and -4b in both equations will cancel each other out when you add them. So:
5a = -4b +5
6a = 4b +6
Add both equations together.
11a = 11
a = 1
Plug in the a value into any of the previous equations:
5(1) = -4b + 5
-4b = 0
b = 0
So, since we know that b = 0, 6b is also 0.
        
             
        
        
        
The length of would be 9 and the width 7, resulting in an area of 63
        
             
        
        
        
The key word here is *square* in "square flower garden". 
So we need to find the area of the flower garden, and subtract it from the overall area of the yard. The remainder will be how much grass covers the yard.
Area of the Square flower garden:
 7.5 * 7.5 = 56.25
Area of the Entire yard:
25 * 18 = 450
450 - 56.25 = 393.75 square feet of grass