What is the area of the shaded region

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.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Asinusoidal function whose frequency is 1/6pi