To train for a race nathon bikes every 2 days and swims every 5 days he biked on October 2 and he swam on October 5 the first day nathan's will bike and swim is October?

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Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?