Which equation represents a quadratic function?
(1) y = x + 2 (3) y = x
2
(2) y = ∙x + 2∙ (4) y = 2

According to a survey by the beach lifeguards, there is a 25% chance that surfers will see a dolphin while surfing. which simulation could you use to answer questions about whether a surfer will see a dolphin?