R=9m, 0=(pi)/4

The formula is 0/2(pi)=k/(pi)r^2

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.

Which of the following contains a variable?

Which of the following graphs could represent a quartic function?