What factors may lower your credit score when you have a credit card?

payment history

Step-by-step explanation:

Payment history is the most important ingredient in credit scoring, and even one missed payment can have a negative impact on your score. Lenders want to be sure that you will pay back your debt, and on time, when they are considering you for new credit.

yo

step-by-step explanation:

yo

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for