Answer is:
a) 32 
b) 59
Both are arithmetic sequences
        
                    
             
        
        
        
Answer:
Pretty sure she was best known for calculating flight paths of spacecraft.
 
        
             
        
        
        
First you distributive property:
3x-15=9
Add 15
3x=24
Divide
x=8
        
                    
             
        
        
        
Answer:
im pretty sure its the 3rd one.
Step-by-step explanation