Can you please tell me the Domain?

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog