You’re planning a trip to Disney World with friends over winter break. You get a credit card offer in the mail that lets you earn airline miles for every $1 you spend, plus bonus miles for opening a new account. Even though you opened three other credit cards this year, you jump on the opportunity and sign up immediately because you haven’t bought your flight to Florida yet. Does your credit score go up or down?

Why does it go up or down?

If your score goes down, how can you fix it?