Step-by-step explanation:
In the recursive formula an = an−1 + 5

Suppose if a_5 is the nth term then previous term is a_4
To get the previous term we need to subtract 1 from the n
So a_n is the nth term
is the previous term
Here 5 represents the common difference between two terms
So value of previous term is represented by

Answer : 
Answer:
Right angles
Step-by-step explanation:
The 2nd option from the top
Answer:
its the second one from the left
1×4=4
3×4=12
6×4=24