The truth that Jessica is going to have to learn about Grace period is the fact that Most banks eliminate their grace period on new purchases if you​ don't pay your balance in full.
The grace period in the card is that time that exists between the end of the billing cycle and when the payment is due to be made by the customer.
If the customer pays in full before the date they may not be asked to pay any form of interest.
Read more on credit cards here: https://brainly.com/question/8806649
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