How do you calculate the number of daily spells a wizard can cast per day in 4th edition Dungeons and Dragons?

In 4th Edition Dungeons and Dragons, a wizard's daily spells are determined by their level and class features. A wizard can cast a number of daily spells equal to their level plus their Intelligence modifier. Additionally, they can select spells from their spellbook based on their level, allowing them to prepare a certain number of spells each day. Remember that daily spells can only be used once before a rest, so strategic planning is essential.