Melanie packs boxes of envelope into a larger box. the volume of each box of envelopes is 1,200 cubic centimeters. which is the best estimate for the volume of the large box?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]