Comparing Dart boards.
A toy store sells two sizes of circular dartboards. The larger of the two has a radius that is 3 inches greater than that of the other. The radius of the smaller dartboard is t inches. Find a polynomial that represents the difference in area between the two dartboards.
The difference in areas of two circles is expressed as a polynomial. The solution is detailed and well presented. The response received a rating of "5" from the student who originally posted the question.