Addison brought a set of 8 classic paperbacks to a secondhand store to sell. She was paid cash for the entire set. Before she left, Addison used $4 of her earnings to purchase a used board game. She had $10 remaining. Which equation can you use to find p, the value of each paperback in the set?
8p+4=10
8p–4=10
4p+8=10
4p–8=10