A) show that $n(2n + 1)(7n + 1)$ is divisible by 6 for all integers $n$. b. find all integers $n$ such that $n(2n + 1)(7n + 1)$ is divisible by 12.

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.