What is the midpoint for this question

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Solve the system of equations. y= 2x y= x^2 - 15

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.