Mrs. galindo found a first edition copy of the book 1984 on sale. she paid $75, which was $7 more than 1/3 of the original price. what was the original price? let p represent the original price of the book. which equation best represents the situation given?

(a 7 + 1/3p = 75 )

(b 7 - 1/3p = 75 )

(c (1/3)(75) = 7x)

(d 75x + 1/3 = 7)