Which of the following correctly shows clustering for the problem 72 x 13? 72 x 10 + 72 x 3
72 x 12 + 72 x 1
70 x 10 + 2 x 3
72 x 10 + 72 x 13

Louis wants to carpet the rectangular floor of his basement.the basement has an area of 864 square feet.the width of the basement is 2/3 it's length. what is the length of louis's basement