Answer:
1 hour and 15 min 
Step-by-step explanation:
I think this is right but look it up just to be sure
 
        
                    
             
        
        
        
Answer:
1. 4(4-9m)  2. 8(x-5)  3. 7(5-3a)  4. 2(2n-1)  5. -10(3n+1)  6.  6(5n+1)   7. 10(3x+7)   8. -3(n+4)  9.  2(9-2a)     10. 8(1-k)    11. 5(8-7n)    12. 5(9x-5)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
a) add x , subtract 1 and divide by 4
The solution of given equation 
<u>Step-by-step explanation:</u>
Given equation  1+3 x  = -x +4
                 <em>  Add 'x' on both sides , we get</em>
                      1 + 3 x + x = - x + x +4
                      1 + 4 x  = 4
       <em>  Subtract '1' on both sides , we get</em>
<em>                     1+4 x -1 = 4 -1</em>
                          4 x = 3
<em>       Dividing '4' on both sides, we get</em>
                           
                           
<u><em>Final answer</em></u>:-
<em>The solution of given equation </em> <em></em>
<em></em>
 
        
             
        
        
        
Answer:

Step-by-step explanation:

Subtract 10 from both sides:

Divide both sides by  :
:

Placing  on the left:
 on the left:

For example, if the total charge is $27.50 and the distance ridden is 250 mi, we can calculate the additional cost per mile, as such:

