Hey there! I'm happy to help!
Step 2 is incorrect. She added 4 and 2 first, but you are supposed to multiply and divide first. Then she multiplied 6 and 6, which is 36. Then she divided 36 and 2, which is 18, and then she subtracted 7, giving her 11. Step 2 is what threw the whole thing off.
Here is what Sandy should have done.
STEP 1: 6·4+2÷2-7
STEP 2: 24+1-7
STEP 3: 25-7
STEP 4: 18
I hope that this helps! Have a wonderful day! :D
 
        
                    
             
        
        
        
Steps:
1. Multiply the first line by 3 and the second by 2
 3(3x + 2y= 4)
 2(8x -3y=-6)
2. New lines are
 9x + 6y= 12
 16x + -6y=-12
3. Now add/subtract them
 25x + 0= 0
 25x=0
4. Divide by 25
 X=0
5. To find y, substitute the 0 in the x in one of the equations 
9x + 6y= 12 
9(0) + 6y= 12 
6y= 12 
6. Divide by 6, your Y=2 
7. X=0, Y=2
        
             
        
        
        
Answer:
2 2/3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
If you are asking for the equations, Company A would be 0.35x + 5 and Company B would be 0.50x + 3.50. :)
Step-by-step explanation: