Well, first you should make both sides of the equation to the power of 2. 
So, you'll have 7X = 1225, and then X is 175 :)
Have a wonderful day! 
        
             
        
        
        
Answer:✓ 819/13= 63 miles distance in one hour 8*(63)=504 miles in 8 hours Warning: I am sick in bed. Double check my work.
Step-by-step explanation:
 
        
                    
             
        
        
        
What’s the question here?
        
             
        
        
        
Answer:
2) D
12) C
13) D
Step-by-step explanation:
2)     4° C at 6:00 PM
       
A)  + 2°  - 6° = - 4°          4°  -  4°  = 0°       0° does not equal 4°        A   Correct
 Correct
B)   - 5°  + 1° = - 4°           4°  -  4°  = 0°       0°  does not equal 4°      B   Correct
 Correct
C)  + 6° - 4° =  + 2°          4° + 2° = 6°           0° does not equal 4°      C   Correct
 Correct  
D)  - 7°   + 7° = 0°            4°  + 0°  = 4°          4°  does equal 4°           D = Correct
The answer to question #2 is D
12)  M = -3
N ---->  M = 8.5 units
The only possible options for N are:
-3 + 8.5 = 5.5
-3 - 8.5 = -11.5
-11.5 is not a choice, so the answer to question #12 is C
13)  Scale: 1 inch = 70 yards
Abe walks 3.5 inches (on the diagram)
Multiply both sides of the scale by 3.5
3.5 * 1 inch = 70 * 3.5
3.5 inches = 245 yards
Abe walked 245 yards
The answer to question #13 is D
Hope this helps :)