What is the estimated number to 204878

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

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.