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:
1 hour each 30 minutes so the answer is 30 minutes
Answer:
A constant in math is a value that doesn't change. Instead, it's a fixed value. All numbers are considered constant terms.
Answer: -9
Step-by-step explanation: it is a negative because it is minus 9$ from the price just like adding -9