How many unique ways are there to arrange the letters in the word den?

Which statement accurately explains whether a reflection over the y axis and a 270° counterclockwise rotation would map figure acb onto itself?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

Stefanie is painting her bedroom. she can paint 2 1/3 square feet in 4/5 of an hour. how many square feet can she paint in one hour?