Okay so we know that only 12 people or less can fit inside the van so the answer would be : p is less than or equal to 12 Do you know how to show that as an inequality?
Volume = length x width x height V = 4 x 3 x 3 4 x 3 = 12 V = 12 x 3 V = 36 cubic cm. 1 cubic cm. = 1 ml. 36 cubic cm. x 12 compartments = 432 cubic cm. 432 cubic cm. = 432 cubic ml.
