Alexander is buying a variety of fresh peppers. He spends 8.49 on bell peppers, 5.96 on jalapeño peppers, and $4.37 on banana peppers. Altogether, how much will Alexander spend on peppers?

Alexander spends 8.49 + 5.96 + 4.37 = $<<8.49+5.96+4.37=18.82>>18.82 on peppers. Answer: \boxed{18.82}.