Which relation is a function?

{(6, 0), (–7, 14), (–2, –5), (–2, 5)}

{(–1, 3), (5, 3), (–6, 7), (9, 0)}

{(0, –7), (4, –8), (0, –9), (4, –10)}

{(2, 4), (2, –7), (2, 11), (2, –15)}

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%

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

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?