How can u tell the difference between a linear function and exponential in a chart?

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.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Which polygon is she in the process of constructing ?