Answer:
I think it's the first one if not put the last 
PLS PUT ME BRIANIEST 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
The solution is  (2,6)
Step-by-step explanation:
Let
x-----> the number of hours to change a fuel injection unit
y-----> the number of hours to change a transmission
we know that
5x+10y=70 -----> equation A
8x+8y=64 -----> equation B
Solve the system of equations by graphing
Remember that the solution of the system of equations is the intersection point both graphs
The solution is the point (2,6)
see the attached figure
 
        
                    
             
        
        
        
3.14 - 3a Radians
Because 
180o = 3.14 radian
        
             
        
        
        
Answer:
Either 130 or 131 would be acceptable.
Step-by-step explanation:
When we estimate, we do not use exact values.
66.17 is close to 66
44.98 is close to 45
20.15 is close to 20
             
Add the estimates together: 66+ 45+ 20 = 131
We could also estimate 66.17 to 65 which would give us an estimate of 130
 
        
                    
             
        
        
        
Answer:
A:5
Step-by-step explanation:
if it asks for parallel it will always be the same slope