Which of the following lists of ordered pairs is a function?

a. (1, 1), (2, 3), (1, 5), (4, 7)

b. (0, 2), (4, 2), (0, –4), (4, –2)

c. (2, 4), (–2, 4), (3, 9), (–2, –4)

d. (2, 4), (3, 9), (4, 16), (5, 25)

Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?