14.9 is rounded to 15 or if you are going by tens then it is 20
        
                    
             
        
        
        
Answer:
I think it's b I'm not sure I'm sorry if it's wrong 
 
        
             
        
        
        
Answer:
<ADC=131°
Step-by-step explanation:
<ADC= <ADB+<BDC
We need to substitute the angle measures and simplify to get:
<ADC=89+42
This simplifies to give us:

The correct answer from the given options is the first choice.