Can h help with this?

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle