Since we are talking about real quantities (hours), x should be positive. Also, you need to take into account that Wendy needs to play in order to win game levels.
Therefore the domain will be: x > 0
        
             
        
        
        
Answer:
3
Step-by-step explanation:
3
+
11
⋅
(
8
−
4
)
÷
(
5
+
6
)
−
4
  Subtract  4  from  8
.
3
+
11
⋅
4
÷
(
5
+
6
)
−
4
Multiply  11  by  4
.
3
+
44
÷
(
5
+
6
)
−
4
Find the common denominator.  
Add  5  and  6
.
3
+
44
÷
11
−
4
Write  3  as a fraction with denominator  1
.
3/
1
+
44
÷
11
−
4
Multiply  3/
1  by  11/
11
.
3/
1
⋅
11
/11
+
44
÷
11
−
4
Multiply  3/
1  and  11
/11
.
3
⋅
11
/11
+
44
÷
11
−
4
Write  −
4  as a fraction with denominator  1
.
3
⋅
11
/11
+
44
÷
11
+  −
4
/1
Multiply  −
4
/1  by  11
/11
.
3
⋅
11
/11
+
44
÷
11
+
−
4
/1  ⋅
11
/11
Multiply  
−
4
/1  and  11
/11
.
3
⋅
11
/11
+
44
÷
11
+   −
4
⋅
11
/11
Combine the numerators over the common denominator.
3
⋅
11
+
44
−
4
⋅
11
/11
Simplify each term.  
Multiply  3  by  11
.
33
+
44
−
44
⋅
11/
11
Multiply  −
4  by  11
.
33
+
44
−
44
/11
Simplify the expression.  
Add  33  and  44
.
77
−
44/
11
Subtract  44  from  77
.
33
/11
Divide  33 by  11
.
3
 
        
                    
             
        
        
        
Volume is Length x width x height. So what are three numbers that multiply to 90?
30x30x30=90
        
                    
             
        
        
        
The area of the small rectangle is 3 units square.