Excellent persuasive speaking typically involves multiple forms of evidence. How might you use logical $($logos$),$ credibility $($ethos$),$ emotional $($pathos$)$ and cultural $($mythos$)$ appeals together in a persuasive speech that advocates increasing the age for selling tobacco products to persons $21$ and over? And, how would you use these appeals in a sales presentation for a sunscreen product that claims that it will prevent skin cancer?