Answer:
a. around 36.36 hours; around 28.57 hours
b. $134.21; $159.38
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Answer would be 9y+36
Step-by-step explanation:
Because if you distribute the 9 inside the parenthesis, you'd get 
9*y=9y and 9*4=36
so 9y+36
Hope my answer was helpful to you!
 
        
             
        
        
        
Answer:
1.33
Step-by-step explanation:
HOPE THIS HELPS!!
 
        
             
        
        
        
You have not provided the choices, therefore, I cannot give exact answers.
However, I will try to help you out with some information.
A cylinder is a three-dimensional geometric solid.
It has the same shape as a soda can.
<u>As for the bases, they have the following properties:</u>
1- the bases have a circular (disc) shape
2- the bases are congruent to each other
3- the bases are parallel to each other
Hope this helps :)