Marisa wants to buy 150 shares of IBM at $90 per share. Her regular, full-service broker will charge her a commission of two percent. She can complete the transaction with an online broker for a fixed

Marisa wants to buy 150 shares of IBM at $90 per share. Her regular, full-service broker will charge her a commission of two percent. She can complete the transaction with an online broker for a fixed commission of $19. How much would she save by buying stock online?

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