What is 43,080,700 in expanded form

What is the distance between (–2 1/2,-3) and (1, –3)?

What is the volume of this square pyramid?

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.