You could do, but not always, you should be aware that advertised rates are what are known as representative rates. This is basically an example of what you could get based on certain criteria such as your credit score, how much you want to borrow and for how long.
Not everyone will get the APR that’s shown but a minimum of 51% of successful applicant will be offered the advertised rate. You won’t know what your personal APR will be until you’ve applied for your card.
Remember that an application will show up on your credit score, so it’s a good idea to avoid applying unless you think you’ll be accepted.