A local bookstore owner buys a book for $15 and adds a 20% markup when she sells it in her store. Later, to reduce inventory, all books are on sale for 20% off. How much more did the owner pay for the book compared to its final selling price?

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Afootball is throw by a quarterback to a receiver

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n