A store is giving out cards labeled one through 10 when the customers enter the store if the card isn’t even number you get 15% on your purchase that day if the card is an odd number greater than six you get 30% discount otherwise you get 25% discount the table shows the result of 500 customers what is the relative frequency for each discount approximately half of the customers receive a 25% discount does this seem like an appropriate method explain the relative frequency for 15% discount is ___ simplify your answer