<span>The GCF is the number that is a factor of both (or all) of the numbers of a given set and which is the biggest factor of this kind (often the smaller number of the two)
7 and 14 have a greatest common factor of 7.
 28 and 7 also have a GCF of 7, so the first two responses fit. 
21 and 3 have a GCF of 3, so that isn't correct. 
7 and 1 have a GCF of 1, so that's incorrect as well.</span>
        
                    
             
        
        
        
I believe the slope of the line is 1/3
        
             
        
        
        
Answer:
Answer: 12
Step-by-step explanation:
 
        
                    
             
        
        
        
$5.50 x 2 is $11.00
$2.50 x 2 is $5.00
$11 plus $5 is $16
it costs $16 to rent a pair of skates for 4 hours
 
        
             
        
        
        
<u>Answer:</u>
143°
option c is correct!
<u>Explanation:</u>
Given: 
Two angles are supplementary:
One angle = 37°
We know if two angles are supplementary their sum is equal to 180°.
Let another angle be x°
= > 37° + x° = 180
= > x° = 143°
Therefore another angle is 143°.