Aras runs a yoga studio where he gives 30-minute classes. Because of the increasing opportunity cost of time, his marginal costs rise with the number of classes offered per day. He faces $24 in fixed costs each day, and his total variable costs can be described by the equation:

VC = 0.5*X² + 2.5*X

Where 'X' is the number of yoga classes he teaches each day. If Aras is able to earn $8 per yoga class, how many yoga classes will he offer each day?