Answer=2x+21 do you want the whole solution?
        
                    
             
        
        
        
Answer:
D is correct.
Step-by-step explanation:
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Answer:
isosceles trapezoid 
Step-by-step explanation:
1) find the distance of the points 

AB = 
BC = |7-4| = 3 
CD = 
AD = |9-2| = 7 
2) equation of the line that passes threw BC 
y = 7 
3) equation of the line that passes threw AD 
y = 5 
conclusion 
the quadrilateral has two parallel sides and two congruent sides, so it is a isosceles trapezoid 
 
        
             
        
        
        
3 quarters, and two thirds of a quarter so It's [3 2/3]