Answer:
maybe there's a typo, that dot usually represents the multiplication, and I got 5.52 
 
        
             
        
        
        
18x=2-8
18x=-6
x=-3
that would be my answer if not then ask someone else
 
        
                    
             
        
        
        
She used the diameter instead of the radius :) instead of cubing 8 she should’ve cubed 4
        
             
        
        
        
Hello! When dividing fractions, you multiply by the reciprocal of the second fraction. So 2/3 divided by 1/2 would be 2/3 times 2.
As you can see, the first fraction would be the same. Therefore, a will be 4. 5 and 6 will swap, so b will be 6 and c will be 5.
Therefore, our answer is D) a=4, b=6, c=5
I hope this helps!
 
        
                    
             
        
        
        
Ok so all we need to do is divide 27mph by 60 to convert the mph to miles per minute. 
27/60= .45 miles per minute