Which is a recursive formula for the sequence 50, 54, 58, 62, …?

Question

1. 
   
2. A.
3. an=4n+46
4. 
   
5. B.
6. {a1=50an=an−1+4, where n≥2
7. 
   
8. C.
9. an=4n+50
10. 
    
11. D.
12. {a1=46an=an−1+4, where n≥2

Answer 1

a_n=a₁+(n-1)d

a_n=50+(n-1)4

a_n=50+4n-4

a_n=46+4n

a_n=4n+46 which is A.