Factorize 12x² + 15xy

What is the range for 31,39,29,34,37,24,36,33,34,28

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.

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?