Determine which function(s) are exponential. Select all that apply. (image attached please help!!)

Through non-collinear points there is exactly one plane.

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.