Well 9x40 would be the solution, so what is 9x40? That will be your answer.
Divide 2 feet into groups of 6 inches and get 4 groups. multiply 128 by 4 and 512 for your distance
Okay so in the little chart at the bottom of the page, the first 2 are true, and the last one is false.
I hope this helps. If it does, please rate as Brainliest